A boy befriends a young caveman in this modern children's classic of friendship and adventure.

Barney isn't supposed to go near the chalk pit. His grandmother and sister both told him the edge could give way and he could fall in--but what else is he supposed to do on a miserable gray day?

It's not long before Barney falls into the pit and bumps his head. But where he lands is more than an old garbage dump: It's a home. There's a little hut built out of discarded junk, and more surprisingly, there's a boy, about Barney's age, inside. He speaks in grunts instead...