Exactly what it says on the tin. Since I have fallen in love with the phrase "stupid dwarf trick" (just imagine a goblin spluttering it while he's being flooded down a trap-lined corridor - go on, you'll like it), I decided to try one. I'm very much a beginner (been playing for two days, have almost everything figured out except the military...I'll watch the tutorial when I get home), so I thought I'd try an easy one - the execution tower.
Twenty-five z-levels tall! No gobbo nor kobold nor bronze colossus nor whatever other beastie shall survive! All shall be marked for [d]umping!
My problem is, I don't know exactly how to go about it. My first instinct was to build a square of walls (something like five by five, perhaps, with an empty square in the middle with a door leading to it so you can actually, y' know...dump the bastards somewhere, with a door leading to it so my dorfs can retrieve precious gobbo loot), and I mean a full square, and then dig out a staircase up (on the outside of the inner 3X3 square), so that eventually there'd be a staircase on the inside with a wall between it and the outer world, and then a single square in the middle where the actual dump will be.
I don't know if this will work, though. Please advice!