Originally posted by (NFH) Chojin:

Do burial chamber's still make a noise when you have cleared them, I've been back to the same one 2-3 times and its empty but I get like ripping/spawning noises and someone running a stick along a railing noise :buzzed:. Also I spotted some of the corridors are blocked off (cave in), can they be dug out?

There are background noises that persist but if it is cleared out nothing new will spawn.
You also sometimes hear troll sounds from trolls in near by troll caves.