Existing comment:
From Where and How?
Discoveries at Cactus Hill (Sussex County) in the 1990s undermined a theory that humans first arrived in the Americas 13,000 years ago, traveling from Siberia via a temporary land bridge across the Bering Strait. Stratified sequences date Cactus Hill 5,000 years earlier, before falling sea levels exposed the bridge. Scholars now propose that people may have skirted along pack ice on either the Pacific or Atlantic coast, or both. |