The Box is a Hell of isolation, claustrophobia and imprisonment. Where you will find many who fear tight spaces.
The 5757h layer of the Infinite Abyss. A land of charred black metal and the stench of ever-burning flesh.
"Are you crazy? There ain’t no such thing. It’s all fairy tales for the stupid and desperate. Even if it were, they all say it’s cursed or something. Get back to work."
The Moaning Lands of the Dead and Dying. Many foul creatures of undeath roam here and seek living flesh, no one is quite sure what happened to this large desert island. Maybe you could unlock the mystery and free the tormented.
Have a large room that elevates either up or down when triggering a trap. The floor can bring the players to new levels, where a mighty beast roams, or the floor flattens the players into the ceiling or drop into a pit of lava.