A level set in a Water Treatment plant, with surrounding Caverns. In the plant proper, there are four rooms: A central room, rafters above a watery cavern, and two elevator rooms. In the caves, there are two tunnels connecting various open caves, and the elevators. Additionally, there are two upper sandy rooms, and one lower stone room, also filled with sand.
Refer to the page on Quake levels for more details on how to install and use the level.