We needed shelter-more than the rock alone could provide.

Utah's rocks provide clues to the earth's environment during every period of geologic time.

Inside the cavelike space, the rock provides a partial ceiling and the entire east wall.

But if they slept up against the rock, the rock would provide them some shade in the late afternoon.

At the front edge of the cave, large rocks provided a protecting barrier.

The rock also provides a bird's eye view of the beach.

Though the rock would provide him with shelter, he had no desire to stay here.

A single rock in a stream provides at least four habitats.

If you are interested only in human survival, dirt and rock provide excellent protection.

Large rocks along the shore provide clues to where sand comes from.