Soon they would reach the hidden cave where his spy equipment lay.

It is light green in color, and features a hidden cave leading to the water.

The words seemed to echo through the hidden cave.

Soon the birds would flock to their hidden caves and sleep through the coming winter.

"Did he wear a red shirt when you saw him in the hidden cave far below?"

Either way, a safe, hidden cave is easily found for a base of operations.

The hidden cave at the back of the waterfall is a popular place for visiting.

He looked again, hoping to find a possible hidden cave, but there was no sign of anything.

We're mounting a sustained campaign to drive the terrorists out of their hidden caves and to bring them to justice.

Who would think to look in this hidden cave?