Outside was a long, narrow cavern.
On one side of the grotto are the remains of ancient Roman rock, with a narrow cavern.
Cyndre saw a group of gnomes-perhaps a hundred-break away from the rest, and flee toward a narrow cavern beyond the fungi.
He finds what he's looking for, turns right into a cool narrow cavern, the local equivalent of a dark alley.
From his little stone island, Clacker saw the commotion growing all through the long and narrow cavern.
Having no fear of the mind flayers' primary attack methods, the spirit-wraith walked straight into the long and narrow cavern, right out into the open.
She seemed to be walking in a narrow cavern, a knife-thin slot between the blue-white ice below and the dirty yellow sky above.
The light was orange, fire-born, dispelling some of the gloom and fear of the narrow cavern.
I remember wandering up the street away from it, round a turn into a narrow cavern of darkness where the falling rain was the only sound.
They walked in single file down the center of the high, narrow cavern.