Humans Landed on 'Treasure Island' Earlier Than Thought

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Now, with thousands of years of ancient trash heap of human exploration in the western amazon in Bolivia as early as ten thousand years ago, the researchers said.
The finding adds to the people into the americas much earlier than previously thought of evidence, scientists.
Scientists focused on the amazon tropical grassland region of Bolivia, the researchers considered to be an old peoples living environment is too harsh. These lowlands of hundreds of small earth, the forest mount is known as the "forest island" ornament, this is a seasonal flood water. These forest island, is often thought originated from nature - for example, the rivers of relief cut to transfer or long-term termite mounds, or birds.
Now, the researchers found that these three middens, wooded island - piles of more than 10000 years ago human settlers left the freshwater snail shells, according to the measurement of carbon. Umberto lombardo, researcher at the university of Bern in Switzerland geologist, said: "new site" is in the south and west of the amazon basin is one of the oldest archaeological site. "This discovery has changed the map of early humans in South America." [the first ten of the biggest mysteries]
Evidence of human habitation

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View the gallery ". Human landing "treasure island" earlier than th...
Scientists, on August 28, 2013 report on the Internet, the report found that these three wooded island...
First a surprised lombardo forest island, he and his colleagues investigated, "on the surface, seems to be as a rock, materials," he said. (it has lack of rocks).
Lombardo said: "look carefully, we see that this kind of hard material to some kind of" shell deposits. Then he began to wonder if it is artificial, because he can't think of any natural process, can create such a deposit.
Researchers investigating the first site, named del tesoro island, this is the Spanish "treasure island". Noth Moxos Bolivia in "a foreigner, if you are interested in mining site, then it must contain buried gold in this aspect, is said to be a common belief," said lombardo. "Of course, there are not gold, but it is very important for public relations work, and then started to dig with local residents," he said. "If you don't explain clearly, what you are, they will think you are there to steal their gold."
Soil samples collected three mounds, found that they are collected by intensive shells, bones and charcoal. They form two distinct stages - an old layer mainly fresh apple snails shell and bone deer, fish, reptiles and birds, and the coating by the organic waste containing pottery, bone artifacts and human bones. [photos: uncover a new human species]
Overlying layer, with human bones and cultural relic, a clear lead to human settlement. And at the bottom of the shell, there may not be obvious due to human activities, the underlying molecular detection and human waste.
View the gallery ". Human landing "treasure island" earlier than th...
Fresh water snail shells in Bolivia archaeological excavations of the amazon forest island.
Separation of the two layer is a layer of thin pieces of burnt clay and rich earth. "My first impression is that it can be made into fragments, stove, oven, lombardo said." In the area of "indigenous people still cook clay oven."
The clovis culture
Radiocarbon dating revealed in about 10400 years ago the holocene early hominid exist two midden. The researchers suggest, hunting and gathering to bring surprise prey have preparation, cooking and eating, about 6000 years of human use of shells and other cultural relics into a mound. Hunter-gatherers may eventually gave up after the rainy climate conditions of these sites.
The scientists found that these shell mound the noth Moxos, it has a dramatic ancient earthwork. Hundreds of big mound, there are thousands of miles to raise field drainage engineering in the region, and advanced that it is able to support larger population in the past, researchers put forward "the bulldozer" predecessor, may have created a new discovery bay hill.
These findings may be added to the theory of heated debate, people came to America much earlier than previously thought. For the most over the past 50 years, archaeologists believe that the first americans, the site is known as the clovis culture, found near clovis, new Mexico reached about 13000 years ago. However, scientists recently found evidence that more than 14000 years ago human beings in the new world.
"Our findings show that people in the amazon account of Bolivia noth Moxos of at least 10500 years ago, lombardo said." "In order to achieve this position, people had to go to 6000 kilometers (3700 miles) from the Atlantic coast, if they come, or they have to pass through the andes, if they come from the Pacific coast this suggests that either they touched and adapt to the new environment. Extremely fast or for a long time ago, they began their trip."
Lombardo and his colleagues wanted to investigate why people now abandoned the use of more than 6000 years later, these forests mound. "Our data show that about 4200 years ago, one of the most important environmental changes," he said. "What is causing the changes in the environment?"