It was a dark cavity in a shiny tooth.

Don found himself staring into the dark cavity of the projector.

A rain of ash sifted down into the dark cavity from which the ship had been raised.

Mungo had a strong sensation that the dark cavity was waiting for something to happen.

The fireplace was a cold, dark cavity, holding the ashes of a fire long forgotten.

He wriggled back into the dark cavity beyond the tunnel wall.

The center one of these now gaped open, showing a dark cavity.

But without them, the deep, dark cavities of his eyes were almost those of a corpse.

Prime's voice boomed at us from the dark cavity ahead.

At any rate, a dark cavity suddenly appeared on the surface of the sphere, and Mitchell stuck his hand into it.