However, the original cave collapsed in a land slide.

The cave would not collapse, because it wasn't under pressure; the water sustained it.

Unfortunately the cave containing the grotto partially collapsed when it was discovered in 1910.

The demons were in one; their cave was collapsing, so I brought them along.

The bowl is thought to have been created when two caves carved by the ocean collapsed.

Not only has it brought the roof of the tunnel down but the outer cave has also collapsed.

"I see no reason why this cave should collapse," he finally announced.

The stunning geography of the area was created thousands of years ago when two limestone caves collapsed.

"Some of the slaves claimed there was some kind of blue fire when the caves collapsed, but I don't put much stock in that."

Huma freed the other animals; he would not leave the horses to die if the cave collapsed.