The same is true for the coastal plain.

The Guadalupe River corridor, where Buckeye Knoll was found, is an environment that has been occupied continuously from the early Archaic to the present.

Other sites along the river may contain comparable material, though the environmental conditions of the floodplain — periodic flooding, sediment burial, exposure — make preservation more variable than in the limestone caves of the plateau.

The Mystery That Persists

Despite decades of archaeological investigation, and despite the significant analytical work done on sites like Bering Sinkhole and Buckeye Knoll before the reburial of the latter, key questions remain unanswered.