A gentle slope leads down to a large agate room. The floor is textured with tooth-like abrasives and littered with snakeskin ecdysis. Two shallow, thin gutters flow a trickle of acrid orange fluid from east to west, terminating in two small drains. An agate door with a handle shaped like a human arm leads to the east.

• Abrasive: good for peeling or shedding. Serpent folk who travel in this room take 1 damage when moving.
• Snakeskin ecdysis: the slough of at least 100 human-sized serpents. Covers the floor, but not the gutters.
• Fluid: acid. d4 if touched, 2d8 if swallowed. One pint flows through this room every turn.
• Drains: lead down to 2.8, Reclamation Chamber. If the snakeskin ecdysis in this room is all dissolved and flowed through the drain, the snake-skin ooze golem will be present in 2.8.