A Navy diver surfaced from a Florida sinkhole holding stone tools dated to 14,500 years ago — a discovery that should not exist. Scientists long insisted humans reached the Americas only about 13,000 years ago, so these artifacts threatened to rewrite the entire timeline.

In 1983, a diver exploring the Aucilla River in Jefferson County, Florida, came across a collection of large bones on the riverbed. The bones belonged to an extinct elephant. The discovery led scientists to a buried sinkhole that contained a well-preserved record of an ancient environment.The site, known as Page-Ladson, was excavated by a team led by paleontologist S. David Webb and archaeologist…

A massive sinkhole drainage project in Florida is about to expose something that could rewrite American history. For decades, archaeologists believed the first Americans arrived over land thousands of years ago, crossing from Asia.

A sinkhole in Florida’s Aucilla River has become one of the most heavily studied archaeological sites in the Americas, with evidence indicating humans were present there roughly 14,550 years ago, more than a thousand years before the culture long credited as the first in North America.The site, known as Page-Ladson, sits in the Big Bend region of Florida where the Aucilla River runs dark with tann…