- from Geology
750L - 890L
Prehistoric humans began using stone tools around 2 million years ago. At first, stone tools were simple hand axes. They were also flints used to light fires.
But as people grew more clever, their use of rocks grew. By 2700 B.C., humans could erect huge stone tombs, like the pyramids of Egypt. Today, rocks and minerals shape our lives in many interesting and complex ways.