The temple is built on two levels and also includes an underground cave.

The Lost numbers can be seen on a hatch in the secret underground cave.

She was listening with great interest to what the Inspector had to tell them about the underground caves.

It can go through a series of underground caves and may appear on the surface again.

You have the same thing again when he leaves his underground cave for the open.

If it did happen, there are underground caves that they can go into and live in until the disease dies out.

It was like staring into the depths of an underground cave.

The area is noted for its underground caves and lakes.

They fly to the party which takes place in a big underground cave.

The area is known for its underground caves and springs.