Mad_Cabbie
Gold Member
- Banned
- #181
Ravi, you uncovered something pretty interesting here.
The last ice age ended and the land bridge began to disappear beneath the sea, some 13,000 years ago. Global sea levels rose as the vast continental ice sheets melted, liberating billions of gallons of fresh water. As the land bridge flooded, the entire Beringian region grew more warm and moist, and the shrub tundra vegetation spread rapidly, out-competing the steppe-tundra plants that had dominated the interior lowlands of Beringia.
While this spelled the end of the woolly mammoths and other large grazing animals, it probably also provided the impetus for human migration. As retreating glaciers opened new routes into the continent, humans travelled first into the Alaskan interior and the Yukon, and ultimately south out of the Arctic region and toward the temperate regions of the Americas. The first definitive archaeological evidence we have for the presence of people beyond Beringia and interior Alaska comes from this time, about 13,000 years ago.