There are some man-made and natural caves inside the rock.

They also discovered man-made caves wherein more of the drawings can be found.

There are about 500 man-made caves beneath the town, dating back at least as far as the Medieval period.

Near the parish church is a large man-made cave.

Probably cheaper than piping cables through all these man-made caves.

Complete with gun platforms and cannon, it was connected to man-made caves in the rock itself.

Still spread out, they moved forward until they came to a wide-arched opening, like a man-made cave in the face of the rock.

They departed their man-made cave by the highest of the outflow drains.

There are a number of man-made caves in the cliffs beneath the castle.

Jazz's hospital room was a man-made cave, or at least it was part of one!