Pit of Unquiet Souls (OSR)

From publisher blurb:

Saare’s Pit has another, more lurid, name—and for good reason. The Pit of Unquiet Souls squats at the centre of a nest of macabre tales of madness, horror and death. It is said, those who spend too much time in the abandoned mine often go mad or disappear entirely, and old miners’ tales tell of the pit’s very rocks whispering horrible secrets to those toiling in its bowels. Still, there are those who think treasure yet lurks in the mine and will brave its terrors to retrieve them.

This Dungeon Backdrop is designed to work with the Lonely Coast campaign setting but can be easily inserted into almost any fantasy campaign.