As you land, the mammoth shudders like a horse shaking off flies. It begins lumbering along up the valley, apparently unaware you are still clinging to its wooly back, keeping warm and enjoying the ride.

The mammoth reaches high ground, nibbles at some bark, and then walks on. Perhaps it will carry you near some cave men who will give you food and shelter.

Suddenly the mammoth stops and turns its head – listening for something. You look up and see human figures approaching from two sides. They are carrying spears and clubs. The mammoth begins to run. You hold on tight. The hunters follow – screaming and yelling. You can’t see where the mammoth is heading, but you’re afraid the hunters may drive it off a cliff. Yet, if you jump off while it’s running, you could be badly hurt.