cavern Synonyms

cavern out subterranean area socket slade shole shelter sepulchre sandpit recess pothole pocket pit nook niche nasopharyngeal subterrane subterranean underground gallery large cave underground chamber caves Hollows sawpit rock shelter posthole vault undercroft tunnel trough tomb lair indentation hovel crypt crater cove chamber cellar cell cavity cave catacomb burrow bowl basement archenteron dale dell den hollow