Space Station 13 - Modules - Types

code/game/turfs/simulated/floor/asteroid_floors.dm

/turf/simulated/floor/plating/asteroidAsteroid
/turf/simulated/floor/plating/asteroid/basalt/lavalava underneath
/turf/simulated/floor/plating/asteroid/basalt/lava_land_surfaceSurface. The surface is warm, but survivable without a suit. Internals are required. The floors break to chasms, which drop you into the underground.