Photo: Footprints Show 1st Americans Came 25,000 Years Early?



Indentations like this one found in 2003 in Mexico (in an undated photo) were formed when prehistoric people walked in soft, damp volcanic ash along a lakeshore shortly after a volcanic eruption, some experts say.

A new analysis of the features dates them to 40,000 years ago—suggesting that people were living in the Americas much earlier than previously thought, according to a report presented in May 2008.

Photograph courtesy Silvia Gonzalez, Liverpool John Moores University, United Kingdom


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