A single room with a giant, bottomless hole in the middle of it. The hole includes many Doors which lead to different levels, each level having a door. The hole is an endless loop, meaning you will see the same doors many times. Aging is slowed down here, but Hunger and Thirst is not. It is impossibly difficult to move to the side, so getting to the doors is basically impossible. Dying in the hole will make you immune to the loop, so Corpses don't loop around back to the top. All mechanical objects don't work in this floor, so you can't bring a jet into the hole to try and get to one of the doors to an undiscovered level. There is only 1 Creature in this level, and it is found in the hole. I haven't decided a name on it yet (maybe The Snatcher?), but I know what it's like. It's an 80-Legged Giant Spider Creature that crawls on the walls of The Bottomless Pit, occasionally snatching up Victims of the Fall and consuming their flesh, then throwing their skeletons back in the bottomless void below. The only known Entrance to the level is by No-Clipping into anything, having a low chance to instantly teleport you here. The only escapes to this level is the Doors to different levels, but getting to those are basically impossible, so there's basically no escape from this level. And the chance for you to teleport to this level via no-clipping is increased to 100% in this level, so you can't escape via no-clipping.
So that was my idea for Level 782 "The Bottomless Pit". The room which holds the entrance to The Bottomless Pit is called The Unescapable Room.