Lorzon (40d) is no more.
A careless miner whose name I won't mention dug into demon pits whilst lookinng for more adamantine. Spirits of fire quickly dispersed into the exploratory tunnels and then the basements and waterworks tunnel, and then up each of the fort's floor. My military, whilst properly trained, lacked equipment (various pieces of iron, steel and bismuth bronze) in terms of quality and material, so they put minimal resistance.
Several dorfs escaped to the surface with a barrel of wine, escorted by a bunch of marksdwarves. But as demons were slaughtering the ones still in the fortress, despair and insanity slowly crept into the minds of escapees and soon half was trying to kill themselves whilst other half tried to kill
others in berserk rage.
The last one to die was a stonecrafter that got wounded early in this mayhem and hid in a small bedroom that belonged to the philosopher and was in remote part of the fortifications outside. Before he persihed, he managed to see the arrival of an elven caravan (who got killed by demons), goblin siege (who too got killed by demons), and noble immigrants (who died you know how).
In late Slate 207, the stonecrafter died in the bed, and Lorzon crumbled into ruin.
The reclaim party arrived next year. A group of marksdwarves, hammerdwarves and two units of axedwarves. They actually managed to kill few demons, but had few losses as well. Someone went insane, someone threw a tantrum.
As half of the reclaim soldiers was getting insane, a surprise visit by 4 Spirits who were hiding in the workshop rooms quickly set everything on fire, and whoever was alive at this point abandoned Lorzon and ran away.
In 209, I've started a new fort, far far away from the ruined Lorzon, but that's a story for some other time