For more details on Beringia and the ice age you will have to research the archaeology of the area. Areas that were covered with ice could not have had large settlements, so check into the early habitation sites in the area.
This website has some good links that may serve as a start.
74 posted on 06/01/2008 6:59:21 PM PDT by Coyoteman
(Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)