"Fears of being eaten by subterranean crocs are replaced by the more immediate possibility of being trapped by rising water. More cavers die by drowning than any other cause. Knowing there were no air chambers behind us, we rapidly pushed forward hoping to find refuge. We abruptly broke out into a massive subway cave with a crystal clear river flowing through it. This was our sound of moving water. The cave was seething with life. Thick mounds of guano nourish centipedes, crabs, and thousands of mole crickets. Menacing huntsman spiders the size of Frisbees scuttled along the walls searching for bats to eat. Cave racer snakes slithered along the floor looking for baby bats or swiftlets fallen from the ceiling. The river was teeming with pale shrimp, crayfish, and some unknown type of isopod. Fish finned in the current and held in seams, just like they would in a trout stream. I rigged my fly rod with a 5-weight line and tied on a grasshopper pattern, figuring it would be close enough to a mole cricket.