Buffalo at prarie State Park in Kansas graze around a pile of chert brought in by Archeologist Neal Lopinot in an attempt to see whether Buffalo's hoofs could flake chert in a way that could be mistaken for a man made object. The experiment attempted to recreate the impact a 1500 pound Bison hoof has on a piece of chert.

buffalo prarie graze horns horizontal photography chert experiment roam kansas usa wild west america wildlife