Wow,
This one happened yesterday. And I have to say, i'm a little puzzled! lol
My dwarves initially placed the wagon atop a 1 Z level high hill along side a huge mountain. The hill was of decent size, so I decided to start digging on the side of the hill, and later change it to some kind of keep on top of the hill, with a moat all around. The idea was grand.
Well, I quickly reazlied that the level directly under the surface, was being used for my huge stockroom. Totally didn't think that through. So I said to myself, bahh wtver, i'll just make a keep for now and deal with the moat later.
So I build ramps and start building a draw bridge. Everything is... "going fine". Until, I get a nice message.
(Not sure of exactly what it said)
"A Collapse has occured!!"
I'm like woa! Bam the bridge that was being built breaks down, that or the floor tiles I was trying to build next to the ramps. In any case, it's not TOOO bad, the dust blew on one of the builders and he had "trouble breathing". I thought to myself Meh, i'll have to build supports.
Here was the stupid mistake, I didn't tell the builder to stop it with the bridge and or the floor tiles I was laying out. And BOOUM! Again, another collapse. Only this time, it literally broke through the ground and started spraying dust all over my Fortress first floor.
At this point I start panicking just a bit, since 1 of the legendary Masons got pretty beat up and was unconscious on the floor. As I'm building an emergency Hospital... (Yeah... didn't tell the builders to stop yet). BABOUM! Another colapse.
This time, it made a 1 X 3 hole on the surface, 1 X 2 hole on the first floor, and finally a 1 X 1 hole on the third floor. It sucked in a bunch of wood and ore, the legendary Mason and, some other dwarf. Oh and I forgot the dwarf that was having trouble breathing, I guess that last cloud of dust was too much, as he passed away right there.
So I CANCELLED those suicidal building orders and fortified my fortress.
I mean, I was prepping for the hordes of evil that would eventually befall my fortress. Not kill my dwarfs with funky architecture...
Like I mentioned earlier, I'm not sure if it was the bridge build order that was wonky, or the floor tiles? Or even a lack of support? I'm not all too sure about it.
In any case, the 2 other dwarfs survived after INTENSE surgery & bone setting. The worst was the legendary Mason who got both upper & lower arms SMASHED, and his right foot.
No idea who he manages today, but he seems to be ok lol.
Cheers,