
Rust-red rock climbs in countless offset steps, cut by ravines and pools of green, caustic water. The whole land seems to breathe: gas fields hiss, the ground seeps and geysers rumble. Every hazard warns you before it strikes, and standing in the water or the gas leaves you Caustic. Only the creatures born here are immune. A Caustic Filter is the best thing you can bring.
Spiteful Larvae slowly gnaw the caustic stone into porous rock, Sulgills guard their nests and Veilwings circle on the warm air above the geysers, looking for carrion. The dangerous ones come in packs or from above: Plague Rats in groups, the Pesta that calls them, Caustic Scorpions, Siphonflies that latch on to drink, and the Rotburster, which swells before it bursts.
Atmosphere
- A sickly green glow and hissing vents.
Terrain
- Many-stepped terraces, ravines, caustic pools and geysers.
- Pressure crust and seeping ground.
Structures
- Scorpion Den, Sulgill Nest, Larva Colony, Mineral Pocket, Mud Spring
- Research Camp, Corroded Remnant, Sunken Shelter
Hazards
- Caustic gas and caustic water.
- Geysers.
- Siphonflies, Plague Rats, Caustic Scorpions, Rotbursters and the Pesta.




