10,000 years ago, the Sahara was an oasis, and burial sites show that two great migrations took place

2022-05-03 0 By

4.6 billion years ago, after the Big Bang, the Earth gradually formed, but until more than 3 billion years ago, the Earth began to appear single-celled life, and the ancestors of human beings — early apes, it was only three million years ago, but some scientists according to the genome sequencing, believe that human development to today only 140,000 years.So where did our ancestors come from?In fact, there has been a lot of debate in the scientific community, although people would like to think that we originated on our own continent or even in our own country, but most scientists agree that Homo sapiens originated in Africa, and left Africa about 50,000 or 60,000 years ago, and migrated around the world.An archaeological site in Niger, Africa, also proves that early humans did live there.Evidence from the ruins suggests that the Sahara was a vibrant oasis in prehistoric times, and the place changed dramatically in the blink of an eye.The scientists found the remains of more than 200 prehistoric human burial mounds, including three interlocking hominid fossils, one of which was an older woman in her 20s when she died, and two of which were children around five years old when they died.Scientists speculate that the three may have slipped and drowned while fishing in the lake, and were buried there in accordance with the funeral customs of the time.Five thousand years later, the three remains remain intertwined, even though the bones have been smoothed by sand.Twelve years ago, scientists discovered the remains of nearly 200 prehistoric humans in Niger’s Tobero region, providing clues to redefine the climate and environment of the Sahara desert in prehistoric times.Thousands of years ago, antelope, hyenas, hippos, crocodiles and other animals lived freely in the area, as well as ancient humans.In addition to the remains of hundreds of prehistoric humans, the site also found a large number of fossil shells that had been eaten, including a number of pottery artifacts, the hot desert environment has preserved these primitive human life details.After eating shellfish, prehistoric people would stack the shells neatly.These details provide clues as to how ancient humans moved in and out of The Sahara desert in Africa in response to local climate changes more than 10,000 years ago.”The Sahara is the best archaeological site to study the patterns of ancient human migrations as a result of climate change, and many of the sites and artefacts excavated here are very detailed and complete,” says Prof Mackinta of Rice University in Houston.Mr. Berino, the biologist, organized an international team of archaeologists to analyze pollen, pottery and human remains at the site. Some of the remains, which were found in the scorching desert, were packaged and brought back to the lab.So instead of relying on the surrounding sediment in a sand pile to determine the age, scientists have to rely on the remains, which are normally determined by analyzing the residual collagen on the remains.But sand has long since worn away collagen from the remains, and scientists have been able to date the bones using carbonates, which are more destructive.The study found that there were two large-scale migrations of prehistoric people, the first in the Holocene period, 10,000 years ago, when prehistoric people came to this utopia by hunting and fishing. They settled down near the water source and eventually moved to other areas as the lakes dried up.In the second migration, more than 7,000 years ago, a group of shorter, more slender prehistoric people arrived again. Twenty percent of fossil bones, ivory tusks, fishing tools and shell artifacts have been found in the remains, indicating the lake’s reappearance.The pictures are from the Internet and must be deleted.