Horror Movie Maps #23: The Descent (40x40) (Patreon)

Combining spelunking with creepy blind cave monsters was a pretty fun idea and kinda perfect for D&D. This map has a bunch of tight spaces that PCs will have to squeeze through and a huge chasm to cross before getting to the creature's lair. Could also load up with traps and cave-ins, as well as burrowing creatures, or small creatures that can maneuver through the tighter tunnels with ease.