cavern
Sometimes, in names and especially by show-cave owners to impress intending visitors; but the normal word in anyy English-language caving speech or text is simply "Cave" irrespective of type and dimensions.
A grotto is a large cave-like area, often next to water.
Cave.
Large caverns and complex labyrinths earned the cave it's name.
A cave system - as simple as that. :-) Sometimes the system is named as So-&-So Cavern, especially if part of it has been modified to form a show-cave, but the formal and most used term is still "cave".
it is in the cave mine
cave
Organ Cave is in Greenbrier County, West Virginia. It is a large and historic cave that is listed on the National Register of Historic Places.
According to the site below, it is 144.89 miles long and the second largest cave in the world.
The simple subject in this sentence is "cave," as it is the noun that the rest of the sentence is about.
AnsweA cave is a natural underground void large enough for a human to enter, while a cavern is a large cave that was formed chemically (through things like acid rain). Another mining definition for cavern can also be series of connected underground caves. This definition is the scientific term.You can also check for more details -http://wikiuncle.com/index.php?title=Cave_vs._cavern_vs._hollow&redirect=no
A Cave
The word you are looking for is "cave." A cave is a hollow opening or natural underground space that is typically large and found in hills, mountains, or the ground.