Maybe those prehistoric people knew some thing that we didn't.

At least 10,000 years ago, prehistoric people came to what is now Illinois.

So those prehistoric people got to rest during the winter, just like the plants.

We always think prehistoric people were in tune with nature.

Prehistoric people could make one of these spear points in just 10 or 15 minutes.

Another phase of significant construction work by these prehistoric people has been dated to the mid-15th century.

Evidence of occupation by prehistoric peoples has been found throughout the wilderness.

Horses were very valuable to the prehistoric people, as they provided not only a means of transport, but also man power.

Prehistoric people occupied the Richfield area for more than 7,000 years.

The analysis shows how much time has elapsed since it was heated by prehistoric people.