Now that's something odd.
My fortress is on its last breath, after a devastating tantrum spiral (those things kills many much more dwarves than goblins and undead) the fortress population reached 12 (down from its peak that was 120)
And it looks like now the tantrum spiral is finished, as the remaining dwarves seems to have all cool down (Dwarf Therapist does not have them in red anymore for their mood).
So i thought there could be a chance to stand up from that blood filled hole the fortress became and save the fortress.
But then i noticed on Dwarf Therapist that it listed 78 dwarves ?
Hmm, strange, then suddenly i noticed a message of an interrupt by some "left arm" ?
Undead , could it be a silent invasion (as every undead sieges have been destroyed) without the bunch of merchant outdoor noticing ?
Looked at the "Other" listing, and saw a huge amount of undead listed.
What ? Where ? How ? DF didn't announced a new invasion, what's going on ?
Searching i suddenly saw on my big internal refuse stockpiles that were full of enemy bones and skeletons (as great source of bone crafting)
There are a lot of undead in my refuse stockpile ? what !
Looking at the combat report screen confirmed that they are all coming from my gigantic amount of bones stock
How is it even possible, in the "Other" list, there is not a single necromancer anywhere on that map, and the area i embarked had no "dead are rising" zone", this fort has been resisting for 3 full years (the undead invasions were coming from a tower that is at some distance from my map) and never once a corpse has risen without a necromancer near, as it's not a haunted or terrifying zone.
And if it was, in 3 years of undead bashing, at least one would have been standing up again don't you think.
I'm really puzzled, as i can't see how this is happening.
Is it possible a map become branded "Haunted" or "Terrifying" suddenly during gameplay despite it wasn't before ?