The ancient cliffs are contorted with zig-zag folds, and longs ribs of smooth rock reach out into the sea.

As the sun rises, we climb a vast dome of smooth rock.

When he finally stops twisting, he reattaches himself limpet-like to the smooth rock and begins to inch his way back up.

An hour later, we were out of the trees, scrambling through grassland, then across smooth rock.

Spawning takes place on a smooth rock or clean sand bed.