Enter a clue or pattern or both:
The Clue
Surface depression due to a mine collapse (8 letter answer)
The Answer
SINKHOLE
Tags
Notes
The answer SINKHOLE is so rare that it appears less than once every 2500 puzzles.
Related Clues
Topographical feature formed by underground erosion
Definition
SINKHOLE as a noun:
1. (sinkhole, sink, swallow hole) = a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof