So I just recently switched from 40d to 31.04. In 40d, I used to modify the refuse pile options so my outside pile would not hold bones and skulls and stuff and an inside pile would. In 31.04 it appears this has been changed. How does one go about preserving/obtaining the skulls/bones/shells etc or is it even necessary. I couldn't make heads or tails of it from the wiki and other posts.
Also, in the same fortress, I've discovered some sort of large underground water pocket. It appears to be a cavern or whatever, though as my first foray into 31.xx I'm very unfamiliar with how these work. It is only 3 z-layers tall, about 2 z-layers under the surface, and has a sort of winding shape connected to the edge of the map. I've made a well from the top of it and in the civilization screen it says there is some sort of aquatic neutral civilization around.
My question is how do I reveal it? I once tried to dig into the water pocket and managed to slowly flood my entire fortress. I restarted from an earlier save and did not try this again. Since it is connected to the edge of the map and appears to be completely full of water and connected to the edge of the map, will it ever drain. If so, is pumping the best option? Is that random aquatic civ in the pocket? Will the have "fun" if I pump out all the water?