>>2785751I'm a different anon, but I already live in an area with karst topography. Even better, I know a spot where a stream comes out from the bottom of a ridge. The exit is way too small too get into, or even look inside, but someone at some point shored it up with CMUs, and built a pumphouse near it. The pump is fairly modern (probably this century anyway) but it looks like it hasn't been used in quite some time. Is this pretty strong evidence for a cave I could access with some digging? Or is it more likely just small breaches that drain the water that speaks into the ground? There is also a spring further up the hill with a small discharge.
