cavern

• Grande cavité naturelle souterraine, profonde et souvent formée par l'érosion des roches.

A noun referring to a large, dark, enclosed space, typically a large cave or a large chamber within a cave.

1. Large caveB2formal

   A large, deep, natural underground chamber or cave.

   grande caverne naturelle

   • The explorers discovered a vast cavern deep beneath the mountain.
   • Bats roosted on the ceiling of the dark cavern.
   • The cavern was filled with stunning stalactites and stalagmites.

   Synonymescavecavitygrottohollowvault