31D ROOT CANAL. The passage opens to run side by side with a river of white foamy water with a minty scent. It is twenty feet deep and runs south. It is populated by spittleback fish.
Spittleback Fish ((AC 6; MV 30”; HD 2; #AT 1 bite; D 2-8; SA Paralyzing spines; Size S; XP 28 +2/hp)
Any person swimming in the root canal has a 50% chance per round of being attacked by a fish. Each fish is about the size of a large dog and attacks by flipping around and using its paralyzing back spines (save or paralysis for 1d4 turns). They wait for their prey to drown and then they eat what fall to the bottom.