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rBNDBBgX-C4 • Easter Island Origins | Full Documentary | NOVA | PBS
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Kind: captions Language: en [Music] rapanui also known as Easter Island this tiny little island in the South Pacific is world famous for one thing the moai moai are incredible the moai is their first spot that people sees these in IC stone giants stand like Sentinels all around the island but what was their purpose and why have so many Fallen it is easy to imagine that this is the scene of some catastrophe where things fell apart for centuries Western researchers have studied the moai trying to answer these questions and they've come up with their own theories but now new research that looks beyond the moai is challenging those views in all the evidence that we saw we were seeing signs of sustainability there was really no evidence of collapse and rapanui experts are reclaiming their Heritage for you this kind be an ancient abandoned Village for me is the place where my family used to live genetics is revealing surprising clues about the origins of the Island's earliest settlers when we first saw this we thought maybe we did something wrong from their incredible engineering to their beautiful and unique writing some people say that they contain Legends the real story of rapanui is finally coming to light Easter Island Origins right now on Nova [Music] most visitors come all the way to Easter Island because of these stone statues the moai moai they are amazing and they're outstanding and they are unique constructed between 1300 and sometime after the 1700s there are more than 1,000 of these giant carved figures scattered across the [Music] landscape cut from volcanic rock some are more than 30 ft High over time all of the moai have fallen down the 50 or so that are upright today were put back up in recent decades with their backs to the Sea they stare in passively into the island arms held rigidly by their sides some stand on ceremonial platforms known as auu others are sunk into the Earth but for the people who live on rapanui Easter Island's true name the moai are just the beginning M are incredible but ran is so much more than that and its Archaeology is so much Rich than just Mo the moai is the first spot that people sees but behind the mo there is a big history everywhere you walk you can find the remains of the past and that's why for us everything is always important not just the moai our connection with each of the archaeological sites has a direct connection with family it's not a legend it's not a myth it's not a madeup story or something discovered by ecologists it is something that belongs to us one archaeologist who believes the story of rapanui encompasses more than just the moai is Sonia Hawa cardali born on rapanui 70 years ago she has dedicated her entire life to the history and anthropology of the island I feel sorry when they just talking about the mo 70% of the island is survey more than 25,000 archaeological site so that's mean not only the SES this mean also how people leave what they do the family and everything Sonia wants to understand more about the moai but she and other rapanui Islanders see them as only part of the puzzle there are bigger questions to ask who are the ancestors of the rapanui people where did they come from and how did they survive and thrive in this remote and hostile [Music] land the island of rapanui stands alone the eastern most inhabited Rock of the Polynesian Island chains it lies approximately 2,000 mi from the tuamotu archipelago of French Polynesia in the west and Chile in the East 42,000 miles from Hawaii only 14 M long by 7 Mi wide today most of the roughly 8,000 inhabitants live beneath an extinct volcano on the western corner of the island first encountered by the Dutch in 1722 it was claimed by the Spanish nearly 50 years later then annexed by Chile in 1888 but when the original rapanui people first came to this land and where from remains hotly debated the general consensus is that the first people to settle here were Sailors from other Polynesian Islands migrating East sometime around 1200 [Music] CE we are Polynesians our life was the canoe and our territory was the ocean Polynesians we were populating and colonizing Islands across the Pacific that belief forms the heart of rapanui identity cherished by Elders like Carlos Edmunds in ancient legends it is said that in the month of October the rapanui went out to sail their boats to new lands I'm not surprised by anything we're great Sailors and that is how we arrived to the island it is the Bedrock of rapanui oral tradition there's knowledge in the old people and in the horal history behind every Legend there's knowledge there Legends handed down from generation to generation tell how and why their ancestors came to this land they are retto even today by rapanui performers dedicated to keeping the old traditions alive Haka went into a spirit dream looking for a new land for the king till he found the naval of the world he tells the dream to the king who summons seven Scouts and sends them in the direction of the dream to find and explore the island hot and his wife follow in a ship called how IUI the scouts called down to him saying Turn Back turn back this is a bad land the weather changes all the time and our crops cannot grow here hotu Mata replies we came from a bad land where the ocean kills the people with Great Waves let's make of this a good land for our people that is the base of all our history fortunately today Science And scientists are helping us to show how oral tradition was the first the most in the real history that oral tradition reflects a deep and fundamental Truth for settlers migrating from the warm Tropical Islands of Western Polynesia this wind swept lump of inactive volcanoes in the Southeastern Pacific was a bad land where their crops could not grow rapanui is a subtropical Island so there's a big difference in climate to the Tropical Islands for example of French Polynesia the problem was that some of those tropical species just didn't grow and didn't take because it's colder here the first settlers of rapanui traveling from the Polynesian Tropics would have struggled to grow any plants they' brought with them one man who is fascinated by how those settlers survived on this bad land is head to and you know what there there's not that much material An Architect by trade het started an office in 2014 to record rap's Heritage through the archaeological record at that moment there were not many young researchers in rapanui they're releasing the we so head it turned to Terry hunt and Carl Leo from the USA we have been collaborating with Carr and Terry for a long time and we have done so many things together they were a great support during this field works and that was amazing because with car ter we could map the rocks and at the same time we could have the legend behind them and that that is just beautiful one of the sites they studied was aut which lies on the Northwestern coast of the island and was a typical ancient rapanui settlement Central to its layout is the AO a raised Stone platform at aoeu there are five of these some of them with more eyes and some others without Fanning out from the AO are the houses chicken coops and walled Gardens known as manavi and behind the houses lie the fields that fed the community for you this can be an ancient abandoned Village for me is the place where my family used to live and they still are here this place is quite aive for us so the approach of a rabano researcher or any Pacific researcher would be dramatically different from a western researcher rapanui and Western researchers agree that the ancient settlers were Polynesian but where did those Pacific Islanders come from some previous research suggested that they came from the islands of East Asia but in 1947 a Norwegian Explorer named Thor hyal launched an expedition called contiki intended to prove a drastically different view of where the Polynesians originated toal proposed the idea that the pisans actually originated in South America to demonstrate this he managed to build a boat or raft made of BSA as South American Woods he made a Crossing on this raft in a few weeks landing on the Trot archipelago which is now in French buia his theory on South American Origins flew in the face of known linguistic evidence so hyal followed this up with a series of archaeological expeditions to rapanui but despite years of investigating the island he could never prove a definite link to South America one rapanui archaeologist who worked with him was Sonia Hawa cardali I work with toor for almost 10 years and for me it's a honor work with him no matter how we think about his theory never forget that he is the one of the person puts rapo in the map in Hell's day experimental archaeology seemed the only way to explore possible links between Polynesia and South America but today we can use DNA which is a powerful tool for tracing human ancestry so did the original settlers of rapanui have links with South America one geneticist who set out to answer that question was Andres Moreno Estrada genetics can be a powerful tool to answer this big question about whether rapanui people made contact or not with Native Americans in prehistory which has been a debate that has been on on for decades Andre's put together an international team including researchers from Hawaii and rapanui to study the DNA of the people of Polynesia and they reached out to the community to gain the support of rapanui Elders Community engagement is really the essence of all these approaches when you study human genetic diversity is all about humans really it's a voluntary participation so it's really key to talk with the community beforehand and as we carry out the research as well keep them informed about the results of the study collaborating with Andre is genetic data analyst Alex yanis what I really love about genetics is it's essentially about participation with the people whose story you're telling it's their sample that's telling the story stories like Bianca the daughter of a Chilean father who moved back from and Chile and wanted to know if what her mother had told her was true when I arriv here on the island everyone told me I was Chilean I was a mongre so that's why I did this study because my mother taught us our genealogy I am happy that Andre came to do this work about the blood of the rapanui where we descend from so so that the rapanui know where their current ancestors are from Andre suggested we do the study to know if we really have ancestry from Polynesia it's absolutely important since our ancestors know they are Polynesian but if there's a study that confirms it it's even more important [Music] an individual's DNA is contained within 23 pairs of chromosomes known as a genome and that's your genetic fingerprint when they began the research Andre and his colleagues were expecting the rapanui fingerprint to contain markers showing mostly Polynesian Spanish and Chilean ancestry since these were the main colonists of the island in the last 250 years to extract the DNA they take swabs from their Volunteers in the field then take it back to the lab in code storage for analysis DNA samples are loaded into a sequencer so that we can get the pieces of DNA that make up the whole Geno of that indiv this allows the researchers to identify specific chains of DNA that can be attributed to certain groups red denotes Spanish ancestry blue Polynesian green Chilean and yellow other European the process is very rewarding because participants are very interested in knowing about their own genetic Origins And when they see that actually they have retained a lot of the polation roots in their DNA it's something that helps them to basically value and identify their own lineages most of the results help confirm the Islanders beliefs about their Polynesian Origins mixed with more more recent colonists I just found out the results I'm so mixed uh my mom is uh from Chile and from England and and Scotland and my father is an Islander but he's also mixed with French and other people so it's uh very interesting to know where you come from I'm very very very happy because this is my mother's story and this study from andr prove it scientifically but my mother already said it a long long long time ago since I was born they did however find some pieces of DNA that they didn't expect when we first saw this we were really surprised and so we thought maybe we did something wrong we thought well let's double check this these pieces of DNA seemed to have their origins in South America but when they tried to pinpoint The Source they got a surprise they were quite different from the more modern Chilean ancestry found in some volunteers we compared it to a panel of indigenous groups from across the entire Pacific coast of South America and the closest match was the zenu group The zenu are Native American people who occupied the coast of Colombia long before Chile annexed ranui in 1888 how could their genetic markers wind up in the DNA of modern Polynesians and how many generations back did they go because each parent only hands down half of its DNA to the next Alex was able to figure out when that piece of pre-colombian DNA had been incorporated into Polynesian chromosomes by measuring its length we can actually look at the length of those individual pieces and figure out how many generations ago this combination of Native Americans and Polynesians took place the date they came up with was much earlier than they expected we saw very small pieces indicating that this ancestry from the coast of Columbia entered rapanui a long time ago actually in a period around what we would call the European Middle Ages around 1200 ad what's more the same identical DNA segments were often seen in volunteers from different Islands which means that these segments came from the same ancestors and since they came from the same same answers we think that this means there was a single contact event between indigenous Americans from the coast of Columbia and Polynesians this means that a group of Polynesians met somewhere with Native Americans had descendants and more likely this never happen again by looking at the DNA of people on other Polynesian Islands the team traced The Telltale genetic markers back to the marises and two Oto is and were also able to plot a timeline of migration across Eastern Polynesia to rapanui from around 1100 Polynesian migrations spread East into Tumo archipelago up to the maresis and all the way down to mangara and from there all the way out to rapanui around 1200 looking closely at these particular Islands there's something else they all have in common something much bigger than DNA most of these islands the mar casus rapanui and R have these very large stone statues on them where the idea of creating large stone statues comes from we can't say and we can't say for sure if these islands develop the idea independently but the fact that they're all existing together in the same genetic cluster suggested to us that this culture was developed once and spread to all these islands Sonia believes that even if this culture developed within the Polynesian Islands there was also some influence from South America and behind the spectacular AO of tongariki she believes she has the evidence to back up her hunch we see the very good evidence of influence of South americ this single broken moai has its Hands Across its body in a style that can be found in ancient Colombia if you compare with the South America is the same the hands and the description of the arm the body is a completely the the same there is no doubt the influence of South America and here we have the estr evidence I I cannot lie you that that is look like a normal no no maybe if I am blind yes but uh it's but this is the only moai on the island with arms across its body all others have their arms by their sides so it cannot prove that the template for carving statues in stone came from ancient Colombia though the DNA suggests some ancient albat isolated link what is provable is where the moai were created almost all of the statues scattered around the island were carved from the volcanic rock of ranu Raku and on the slopes of its massive crater about 400 statues can still be found in various states of completion high up on these slopes Carl and Terry can see evidence of the skill and Ingenuity of the rapanui stone masons it's amazing being up this high in the Quarry and all the work in quarrying out of the Bedrock and statues this big that way up here had to be taken down the slope you can see several moai being carved the large moai here and there you can see the beginnings of of moai up on the side as well high up here in the Quarry yeah what we're seeing is the aggregate of events that occurred over 500 years of of activity here at the Quarry not a final product this is all the things that happened here it's interesting because the Quarry it's kind of a common area that's shared and so there's an understanding that everyone on the island every community on the island has access to the resource here but Rock isn't just confined to the Quarry all over rapanui rock is spread across the land to Western explorers like Captain James Cook who visited the island in 1774 this looked like a Wilderness the ground had but a Barren appearance being a dry hard clay and everywhere covered with stones the early European visitors saw crops being grown in stones and they thought this was somehow pathetic because they're expecting to see plowed fields and the agriculture of Europe how could the rapanui survive on what appeared to be such a Barren Wilderness but this wasn't what it seemed the soils on rapanui are nutrient pore there is an ingenious solution to that and it's using Rock mulch volcanic rock is packed full of nutrients that bring new new life into the world somehow the ancient ranui had learned how to make the best of this austere landscape by fertilizing their fields with stones and using rocks in cultivation will release nutrients into the soil and make them available to the plants Sonia also sees lots of evidence that the rock strewn Wilderness described by Captain Cook was actually fertile Fields here you see a very nice complex and that's mean you have everything here in the center part you can see they take all the rocks and what you see in in the landscape around here is like a a garden yeah this was not the first or last time that Western misconceptions would color the history of rapanui right from their very first encounter on April 5th 1722 the world view of its European visitors would have a profound effect on the island the name Easter Island comes from the first Europeans arriving here on Easter Sunday the modern traditional name is rapanui and the older traditional name is Tapo tahena which really means the naval of the world which probably reflects the Island's isolation Andor its centrality as the whole world the first encounter between the Dutch EXP explorers and the local residents was marked by curiosity and a tragic misunderstanding there was a lot of interest in in the landing party there was a lot of interest in the construction of the ships people swam out to the ships they went aboard they measured every aspect of the ships and the landing party was quite substantial the Dutch Landing party found themselves confronted by a vibrantly painted man he performs what they perceive as a very strange dance and this strange dance was probably really an important ritual that the rapanui would have perceived as proper in these people coming ashore to their land he saw the possessions that the the Dutch had the clothes the hats and the guns and he reached for the gun and several crewmen opened fire so the very first encounter on the shores of rapanui was overshadowed by 12 Islanders dead and many more injured this story is a case of misunderstanding a clash of cultures The Islander is curious and wants to know what the soldier has in his hands he wants to hold it feel it meanwhile the soldier is afraid he's trying to steal the gun and put up a fight this is a clash of two completely different worlds The Clash of cultures that led to this massacre would Prof L affect the way that rapanui was perceived by Western researchers in the centuries to come Western preconceptions have colored the view of rapanui in many ways seeing the moai seeing The Monuments here they can't imagine how uh people would move them with no carts or wheels and because they don't understand how it could have been done it leads to Notions of the mystery of Easter Island and the Mystery is really just what visitors didn't understand just as with Captain Cook Western visitors saw a Barren land covered in rocks and devoid of the trees needed to make wooden sleds or Wheels but it wasn't always like this researchers found pollen evidence in the fossil record suggesting that 1,000 years ago much of this land was covered in dense forest one Millennium later the forest have vanished so we have to ask the question why happens for many Western researchers the answer lay strewn across the island at sites like autu triang St these are pieces of moai the the large statues that once stood on top of the AO I don't know how many the statues are were here maybe four or five it is easy to look at these Landscapes when you see the AO when they're broken down and statues that are fallen and broken like this one here which has no head just the body the head that's over here to imagine that this is the scene of some catastrophe where things fell apart to Western eyes this was evidence of a collapse of society so successive generations of Western Scholars constructed a narrative it explained the barren Rock strewn land the collapse of the moai and The Disappearance of the trees the clap story basically goes that people got to an island that was filled with trees palm trees other kinds of trees as well sort of an Earthly Paradise filled with food and opportunities for for the people that were here the moai building has often been portrayed as some kind of frenzy as some kind of competition between uh different Clan groups where lots of trees were cut down in order to construct and to transport the mo archaeologists had long investigated stone monument building in places like ancient Egypt westerners thought the moai were probably moved on wooden sleds or rollers pulled by hundreds of men which required people and trees lots of people and trees and these westerners assumed that moai building had spiraled out of control people here kind of got into a moai Mania that they started to make bigger and bigger statues and at some point that overe exuberance of statue construction ultimately depleted the island of the resources needed to make up mahu in the first place according to this view moai building deforested the island the soil was starved of nutrients leaving a Barren Rock strewn land then this Theory goes things got worse the scarcity of resources resulted in a societal collapse the Island erupted into intertribal Warfare and led to a very impoverished population living on a Barren Island and the best evidence to prove this was that all the statues had been thrown to the ground so something violent must have happened and the one visible proof we have today is all the statues that were toppled during this Wars this so-called collapse Theory posited that the island once had more than 10,000 inhabitants whose own Folly triggered a collapse of the forest ecosystem and reduced them to a mere 3,000 living on the scraps for many Western Scholars it was a compelling narrative a morality tale for our times but for some researchers this idea had one big problem when we looked at the evidence on the ground we simply didn't see evidence of warfare it looks like this one is being dismantled because we find some of these construction elements in other features over there for what were once considered ruins at aut turn out to be evidence of continuous use this is the head of Mo that was part of the second AO in this ceremonial complex in this second AO all of the mo lay down in the back of the platform that is because that seonu was being dismantled to enlarge the first one pieces of earlier moai were being reused to create an even more spectacular AO from this particular AO we couldn't say that there's evidence of collapse there's evidence of transformation and human societ is changing and that's beautiful destruction is Recycling and creation is part of a larger process and in certain way this m reflects up across the island what some Western researchers had seen seen as evidence of collapse didn't stand up to scrutiny even the Island's caves long seen as refuges against an enemy tribe appear to be something very different this is a great example of a cave that has that construction where they've taken a cave and added these features to it yeah it's not a it's not a refuge cave it's not a hiding place it's a habitation so they made this nice entrance with paving stones and everything and they've used lots of different materials like this panga Stone manga are a kind of foundation stone found in Elite houses the holes bored into them acted as bases for the wooden struts the use of these pinga in cave walls was argued to be evidence of some last ditch defense against attack some people think that this is evidence of tearing down uh elaborate or Elite houses and and reusing the stone out of desperation but these stones are reused everywhere we see the ReUse of these panga Stones not only in things like aahu but also in chicken houses the haroa as well as Earth ovens so they're really used in all kinds of context people used the stone that was available to them and some of that stone were panga reusing and recycling Stone materials here is really the norm at another set of caves nearby he Carl and Terry find yet more evidence of a thriving Community here the rapanui even used the collapsed Lava Tubes as hot houses fed by something rare on an island of permeable volcanic rocks an abundant supply of water in Caverns deep within the caves in those caves we can find fresh water it was one of the largest water reservoirs so it's a very rich part of the island so rapanui caves weren't just simple refuges they were complex Su dappled ecosystems that had been used for centuries long before the collapse That was supposed to have driven people into them nothing here in tahu or in the area that we worked shows that H people were struggling on the contrary they were thriving we were seeing signs of sustainability there was really no evidence of collapse even though Carl and Terry found no direct evidence for collapse they would not dismiss the idea without more research especially when it came to the population of the island over time they started by mapping all the moai on one side of the [Music] island then moved on to the settlement and resource sites our goal is really to sort of characterize the settlement systems and how people are distributed across the landscape and use resources there we've got a good sample of of the communities but we're continuing to do that as an ongoing basis they match these with carbon dates from the sites to build up a pattern showing when each settlement was in use then they ran them through a computer model which converted the carbon data into population numbers by calculating the highs and lows of human activity on the island the results confirmed their hunch it showed the population rise from a small number of first settlers continuing to grow steadily with no sign of collapse at any point the population could fluctuate slightly but its average maximum is probably around 3,000 probably what Europeans encountered when they first arrived on the island a maximum population of 3,000 was much smaller than the numbers cited in the western collapse Story the collapse theory proposed all kinds of numbers 7,000 10,000 15,000 even up to 30,000 population for this small island but Carl Terry and their colleagues found no evidence that there were ever that many people living on rapanui the lack of huge populations being on the island sort of takes the wind out of the collapse Theory because in fact there's nothing from which to collapse there isn't a large population but if you don't have tens of thousands of people living on the island how could the rapanui build and transport the moai for some Western researchers rapanui oral history suggested an answer there many stories about tuo some people say he was in charge of the second boat that brought people here others believe that he was the great king who founded the island but all agree that it was he who made the moai kavak Cava walk this actually referred to small wooden statues but some westerners thought it also described the stone moai Tor hodell and his colleagues attempted to move the statues upright to effectively make them walk but the experiment hadn't worked so most experts still believed that they were dragged on their backs but when Carl and Terry analyzed The moai Lying by the roads that led from the Quarry they noticed something significant these are impressive things aren't they we're looking right here at the reason why they were not transported on logs on their backs that's true how would they be in this position face down and the neck broken it makes no sense that just simply doesn't happen if they're on their backs on rollers they also notice a structural difference between moai lying on the road and those standing on the aahu A moai on the AO has a flat base so the statue stands straight up but most of the moai lying on the road have angled bases and Carl and Terry believe that angle had a very specific purpose Road Mo has to be shaped in a way that can be transported they did it by shaping their base so they lean forward to enable them to walk this is a great example of of the forward lean of these transport moai so if you took the statue and we could put it back up it would be leaning really far forward it means that as you rock it side to side it falls forward across that front edge and takes a step without that it would just rock back and forth and not really go anywhere and walking really describes what these moai did to test their theory in 2012 Carl and Terry built a model of am Moi out of concrete carefully mixed to match the fragile density of the ancient statues volcanic rock and made it walk in our experiments we found it took remarkably few people to move the statue and we were terrible at it you know we were the least expert of any people who've ever moved to moai in the world uh but we're able to do a 5 ton statue with 18 people not all are convinced that the moai [Music] walked but if they did trees were not needed to move the moai and the raponi continued to erect moai long after the trees had died out so why did the rapanui go to such lengths to build them in the first place what were the moai for one tradition that might one day tell us the answer is being lovingly preserved by Luis hooki a park ranger on Rapa L my name is Luis of the hooki clan at the moment I'm carving rango rango which is the tradition of our forefathers of my father and right now I'm following their tradition I've been making Rango o tablets for 25 years I like it because it's a tradition that at a certain time the translation was lost and now we must conserve it and continue to make the rongorongo rango rango is the traditional writing system of the rapanui it is inscribed onto wooden tablets the process starts with preparing the wood and sanding it once it's sanded the wood is traced so you can start to draw on it and then after that you carve the rango rango Luis is one of just a handful of people still carving rango rango he's doing this to help preserve his culture it's Unique and if we lose it we lose part of the history of rapanui no one knows how old rango rango is of what it actually says but in a secluded Monastery in Rome Sylvia Ferrara is studying a remarkable wooden artifact which might help answer those questions this is the Anan CR tablet it's made of wood and it's one of the 27 tablets written in this script which is still undeciphered the isan CR tablet was gifted to the bishop of Tahiti in 1869 by Catholic converts from rapanui it is one of only 27 scattered across museums around the world and the way its figures are oriented suggests a very unusual reading method what you need to do is turn the tablet from one line to the next in order to read it and this is a unique feature of this writing system no other script works in the same way all over the world so it's really quite special despite this unique system it has been said that rango rango was in inspired by European writing that's kind of a degrading view of rapanui Ingenuity it's not only simplistic but it's patronizing it's one of the most unique and beautiful forms of knowledge of Art in the world nevertheless we have to face critics or thoughts that we were copying the glyphs in roro are clearly connected to the art on the island you see the glyph forms in petroglyphs they don't imitate European writing in any sense to put the debate to bed once and for all Sylvia gained permission to radiocarbon date this tablet the radiocarbon date points in the direction of a 15th century date which antecedes the arrival of the Europeans by more than 200 years Sylvia believes this might make rango rango one of the few instances of independently invented writing in the world but what was Rango rangle for many believe that it contains the secrets of rapanui culture some people say that they contain Legends or rhythms or encrypted instructions of how to move moai or develop some technologies there are many many different theories about it but what we do know is that they contain knowledge until rango rango surrenders its Secrets researchers are using tried and tested scientific methods to understand why the moai and AO platforms are located where they are when we we look at the question of where AO are located why are they located there why are some of them very large and some of them smaller why are there some AO in the interior While most of them are on the shoreline it's easy to describe them as being religious certainly that's part of the story but the question is why would you invest so much energy in doing these over and over again they start started with a map they marked out the locations of all the AO on the east side of the island then they began to compare them with the locations of vital resources they chose three as the key sources of sustenance Rock Mo seafood and fresh water but when they tried to map the AO over the rock mules a simple mismatch became glaringly obvious there's Rock mulch everywhere across L but we don't see a and moai everywhere what we find is in fact that AO and moai are in particular locations independent of the of the mulch itself next they looked at resources from the sea when you drive around the island you see one after the other an AO with moai all the way along the coast and of course the coast has a lot of resources fish shellfish other kinds of things that would support population but while the AO on the coast match sea resources very well this cannot expl the AO erected in the interior of the island that left one final resource fresh water most of the moai are along the coastline with their backs to the Sea at first glance that doesn't seem like a good place to find fresh water but look a little closer the water's fresh you think this water is salty that it's sea water but in fact this is a freshwater seat a source of water that comes from the interior of the island moves to the underground and then comes out out at the coast it's a place where uh rapanui people access water for their daily lives on a young volcanic island like rapanui the rocks are very porous the rainwater will enter the island and flow through the porous Island and into lava tubes Etc and will come down to the level and float on top of saltwater and then enter the ocean at low tide when Captain Cook arrived in the island what he saw was people drinking straight from the ocean and he thought this is crazy why would people do that what he actually seeing is people drinking water that comes from these freshwater seeps that emerge right at the coast of the island and when Carl and Terry compared their map of AUM moai with a map of freshwater sources they got a roughly 90% match in fact the locations of fresh water are the best predictor of the locations of AO throughout the island for many this near-perfect match is not surprising because AO are usually linked with settlement those hamlets or vill are located in many cases close to water sources which makes perfect sense that the essentials for survival like your crops and your drinking water is close to where the people actually settle yet for Carl and Terry it's the precise location of the moai that is the key to this Theory one of the interesting aspects about renoi people is they lived in a dispersed settlement pattern in which people used the the landscape around around the AO and sort of a wide area but they're brought together at the AO and the moai again and again the AO not the settlements are closest to the water so we find in fact the yaho and the moai right next to the critical resource because in fact that is the heart of the community it seems the moai acted as a statement erected close to a community's most vital resource but rapanui tradition would see this differently they represent the soul of a dead King so muai location and eventual collapse is also related with an evolution of a political and social structure the statement is we're honoring our ancestors and they might even say to us if we could time travel don't you honor your ancestors in this way looking at all the archaeological evidence it seems more likely that rather than a self-inflicted ecocide the true collapse of rapanui society was caused by outside influences as time went on and the evidence accumulated we realized that a lot of what people thought was collapse was something that actually happened after Europeans arrived and it had an entirely different cause and that was the introduction of Old World disease there was the small pox there was the Spanish Flu a leprosy slave trading it was difficult to live here and it was more difficult to keep the social structures and the life as the way that we knew it over time we see people sort of abandoning AO and moai it's a loss of population they're just fewer people because of the effects of diseases so people are not attending to the AO uh and rebuilding them in the way that they did in the past things got even worse in the 1860s Peruvian slave Traders captured about a third of the population on the island and forced them onto their ships to work in Peru there were protests even the Vatican got involved and consequently the companies were forced to return the inhabitants to the islands however these people had contracted small parks on the American continent only 15 people made it home and this was enough for an epidemic of small Parx break out there by the time it was over there were less than 200 rapanui Left Alive the true story of rapanui is one of survival against the odds by an ingenious and resilient people who came to a bad land and made it good but that story has been overshadowed by a western fascination with the moai and for Sonia and Het that is the true tragedy and Triumph of rapanui if we look only the Moi we are not making this place bigger and make it a small do mean you don't believe in my capacity as a human being if there's one thing that I would like people take from rapanui is that the history has been narrated by a very selected group of people there are different realities the world is full of beautiful amazing stories that deserve to be told and people deserve to hear our history is not unique we share with many islands and we share a beautiful past a complex present and many many tragedies in in the Midway [Music] [Applause] [Music]