The Mines of Dru'hanfal

Mostly populated by duergar and deepgnomes, but the dwarves dug too deep and hit a mystic watersource flooding the floors of the mine and covering it with a otherwordly mist as well as beings that thrive in it. Since the floor was no longer usable the gnomes devised a series of pathways along the walls as well as crafting traps that would force invaders into the misty depths of the mine.

The pathway to the dwarven settlement is covered with glowing magical gems that seems to protect it, seeing as the paths where the gems have gone out has been destroyed by what seems like tendrils, and if  they are not sufficently quiet when traveling you can see movement in the mist as if something is readying itself to attack.

The dwarven settlement is built along the walls and even on the ceiling of the mine, it is covered with glowing gems to protect it from that which lurks, But there are places that have holes in them, almost as if it was made to throw things down into the mist. - Frohtastic