to keep my dwarves from getting cave adaption i would channel a 5x5 tunnel down to the first cavern then run a bridge across it and make it part of my entrance design. in this one fort i had dug a 4 wide channel around a good walled off section of above ground pasture with the downward tunnel in the middle.
i had a caravan arrive from the humans that managed to bring nothing of value, so for that i decided they needed to die. bad idea, two squads died to a single human lasher. as they were leaving i sent an order to make the bridge raise on repeat, i managed to make all of them fall to there death, except misses lasher. she some how flew 10 z levels up and landed unhurt in the fields uptop. i turned off the lever and waited for the rest of my fort to be slaughtered. she just walked out and left. i waited 2 years for a human siege but nothing came.
i copied the save and tried to find her in adventure mode but no luck, so i went to legends mode. she had been struck down by a wandering dragon on her way back to tell the humans what had happened.
i was mad that i would not be able to hunt her down myself so i made another adventure and went after the beast, i died, and then died again and again and again, finally i landed a lucky blow and knocked it out, where i proceeded to pluck its eyes out and try and bash its head in, it woke up and set me and the forest on fire. i gave up, started a new fort, and the forest is on fire. -_- i will come back to this save later