paleocave

Etymology

From paleo- + cave.

paleocave means A cave that was inhabited in the distant past, in particular by paleohumans Lexicurio rates it Rare gem — a strength score of 70 out of 100.

noun

A cave that was inhabited in the distant past, in particular by paleohumans
A formerly-open spelunk that has since filled back in but retains the overall structure as a kind of fossil