US Park surprised human footprints 23000 years ago, or the earliest evidence of human activities in

Original title: US Park startles human footprints 23000 years ago, or the earliest evidence of human activities in America
Big discovery! The oldest human footprints are about 23000 years ago # archaeology # ancient culture # America
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According to the paper published in the latest issue of science, American and British archaeologists found a group of human footprints 23000 years ago in Baisha National Park, New Mexico, which may be the earliest evidence of human activities in the Americas, 10000 years earlier than previously thought by researchers.
It is reported that archaeologists from the United States and Britain found these footprints in the soft mud of alkali flat, a dry lake bed in Baisha National Park. Experts from the U.S. Geological Survey determined that these footprints can be traced back to 23000 years ago by measuring the radioactive carbon in the seed layer above and below the footprints.



Early human footprints found by archaeologists.
For decades, academia generally believed that Homo sapiens first entered North America between 13000 and 16000 years ago, much later than these footprints.
It is reported that 23000 years ago was equivalent to the end of the glacial period. At that time, the ice sheet covered most of North America, and the sea level was about 120 meters lower than today.
Most scholars believe that ancient humans migrated from Asia to America through a land bridge across the Bering Strait. The Bering road bridge is now underwater, forming the Bering Strait between Alaska and Russia. This route was blocked by glaciers during the ice age that began about 33000 years ago and lasted until about 16000 years ago. Few archaeologists claim that there is reliable evidence that humans have lived in America for more than 16000 years.
Dan odes, a scientific adviser to the white sand Park Authority, retorted that the white sand footprints were "clear evidence that humans appeared in America at the end of the glacial period".
It is reported that it is not clear how these footprints were formed, but other studies have found evidence that ancient humans lived on the North American continent thousands of years earlier than previously thought.

Stone tools unearthed in chikwitt cave.
In July 2020, stone tools were found in a cave called chiquihuite in Mexico, revealing archaeological evidence of human habitation, which can be traced back to 27000 years ago.
In 2018, 150000 "unique" stone tools were found in the northwest of Austin, Texas, indicating that humans lived on this continent as early as 20000 years ago.
Archaeologists believe that humans from Northeast Asia may have crossed the Bering Strait land bridge before the ice age. Alternatively, early humans may have traveled by boat from Asia along the Pacific coastline, bypassing glaciers to North America.
The archaeologist who led the excavation of chikwitt cave said that this may be a "failed immigration", leaving no detectable genetic heritage in today's Aboriginal population.
Whenever Homo sapiens first set foot in America, it is generally believed that there was a population surge around 15000 years ago, when human evidence was widespread in the United States and Canada, as well as central and South America.
Text / Nandu reporter Chen Lin