The Page-Ladson site lies in a 30-foot-deep sinkhole in Florida's Aucilla River, which during the late Pleistocene—when sea levels were approximately 300 feet lower—was a spring-fed pond rather than part of a river.
Sources
- Discovery Points to Earlier Arrival of First Americans (nationalgeographic.com)
- https://www.science.org/doi/10.1126/sciadv.1600375 (science.org)
- https://www.researchgate.net/publication/260135500_First_Floridians_and_Last_Mastodons_The_Page-Ladson_Site_in_the_Aucilla_River (researchgate.net)
- https://www.floridamuseum.ufl.edu/vertpaleo/aucilla-river-prehistory-project/ (floridamuseum.ufl.edu)
- https://www.greenepublishing.com/our-aucilla-river-has-bones/ (greenepublishing.com)
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