ceiling crumbling

[lapantouflemagic]

sometimes the whole dungeon is shaking with a crumbling sound, and when i look around i can find passages that apparently crumbled.

what i'm wondering is why does this happen ? is this a trigger because i got a key, killed a monster or something ? or is the whole game set on a timer, with parts crumbling regularily, giving secrets to people foing faster or sealing them forever if we're too slow ?

[Mazjerai]

It's just for story. Any passages that you see collapsed are intended to be collapsed. The shaking and rumbling is intended to make you go "OH CRAP!". Good for immersion.

[Helbert]

ik that I`m a necrophill but it`s also wakes you if you sleep