Originally Posted by corroonb
The Earth's Children series by Jean M. Auel is an interesting series of historical fiction set 25,000 years ago. The first 3 are reasonably good but the quality deteriorates thereafter. They are quite sexually graphic in places if that sort of thing bothers you.
There is another series from Kathleen and Michael Gear. They are about the native Americans, the first book of the series: People of the Wolf starts with the crossing of the Bering Straight.