I think that this area would be cool and I agree I think it would be better it they called it the dank darks or something like that. I also this it would be a great place to put insects/other animals that live in damper areas like you could have earth worms, isopods, centipedes (possible boss), silverfish, etc... I also think there could be a really cool amphibious boss there like a frog, salamander I also thought about caecilians but they live in tropical areas. The last thing that I'll go over is fungus/flora (like they said up above) it would be a great place for fungus and moss to grow