I had a similar experience here in a shallow cave in Texas. When you reach the &#x27;end&#x27; you really just reach the point at which the cave is flooded. The cave has been well known for over a hundred years and likely goes on quite a ways. No one really has an interest in exploring it. It&#x27;d be an expensive and likely just discover a bunch of rock and water.<p>With respect to cave systems, it seems like that the key is finding a previously unknown species. Or find a species in the cave that was thought to have a very limited distribution.