I was up way to late playing DF when I saw that when i pit creatures down a 10+ z level hole they have a pretty decent chance of exploding into multiple pieces of bone, teeth, limbs, etc. I also read that falling objects can cause pretty devastating amounts of damage, so being in a dwarfy mindset I of course decided to try to weaponize this as inefficiently and using as many resources as possible. Here's the basic outline of the idea. First build a hollow tower at least 15 z levels high and on top put platform with a built goblin cage (with fully equipped gob inside so theres more shrapnel) thats linked to trigger which drops the goblin down an internal shute at least 10 z levels onto one of 4 extended raising bridges (thats 1 for each cardinal direction so I can somewhat aim), hopefully exploding due to the massive impact. After the gob drops an appropriate switch is thrown to lower a raised bridge (which was used to keep gob bits on the first bridge until ready to be fired) bridge is raised to fling goblin bits at the approaching siege. I know chances are pretty small that i'll actually hit anything, but I think showering goblin sieges with bits and pieces of their former friends and family sends just the right kind of welcome to my fort that I'm looking for. I'm wondering if anyone has done this or anything similar before? My current fort is only in its third year, and near to finishing it's magma pump stack, but I'm sure making a few of these towers is going to be my next project.