There is no exact word that could be used as an opposite of cavern (a geological formation consisting of an underground enclosure with access from the surface). However, an opposite definition could be a naturally open place.
cave, hole, subterrane, grotto
Lair, hole, shelter, cave, haunt, cavern, hide-out
The elephant is not in a cavern zoo cage. Cavern means empty and gigantic
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.
Lair, hole, shelter, cave, haunt, cavern, hide-out
I'll explore this cavern when I have a flashlight.
Space Cavern was created in 1980.
Space Cavern happened in 2600.
Cavern of the Fear was created in 2002.
The Cavern Club was created in 1957.
Cavern Creatures was created in 1983.
Cavern Creatures happened in 1983.
There is no such thing as monkey cavern. I wish there was though. :( this is the most frickin, hilarious question..... monkey cavern!!!!!!!!!!!!!!
The Child of the Cavern was created in 1877-04.
The duration of The Cavern - film - is 1.33 hours.
I'm not going any further into this cavern without a longer roll of twine! This cavern is cold and damp.