The gravity in the Vault chamber is slightly higher than one "g", and the atmosphere is identical in composition to that in the "valley" above. It is bone-dry and somewhat chilly in the chamber ( about three degrees centigrade ). In it's normal state, the vault is cooler ( -20 degrees C) and the atmosphere richer in nitrogen and helium to prevent oxidation; the crew of the Star Scamp set off a process to bring the vault into a state fit for visitors when they encountered the robot.

Besides the base of the spiral stair, there are only seven large structures in the Vault, the gallery buildings. The floor of the chamber is fused Nickel-Iron, into which thousands of colorful tiles of ceramic and Stelt have been sunk. The buildings are set on 30 meter thick bases of Nickel-Iron, which have sloping sides equipped (at the entrances) with inset staircases. A 10 meter wide "porch" is located in front of the entrances, which consist of several arches, 1.5 meters wide and 4 meters tall. The arches can be closed with 5cm thick slabs of a tough metal alloy; winches inside the buildings are available to raise or lower these slabs (70% of which are open when the PCs arrive). The building-walls are of .3cm thick Stelt; cutting requires some sort of energy weapon or tool. Each 5 points of vehicle damage will make a 1cm long slit in the material...making an alternate entrance to a building will take some time!

The Gallery interiors have high ceilings, but are all one-storied. The floors are vast but crowded, looking like a cross between a old curiosity shop and the bargain basement of a department store. The various sections are divided by walkways, walls of shelves, and miniature buildings intended to provide flavor and appropriate settings for the art. There are few other furnishings worthy of note; seats and benches, just the right size for a 2.4 meter tall Queyon, are set in the walkways. Small chambers sunk into the metal floors hold plumbing facilities, and a number of water troughs are provided. The water for both of these have been shut off long ago. A civil engineer or xeno-anatomist may be able to find some interesting things about the Queyon by studying these facilities and furniture, and possibly earn himself a name in ergonomic archaeology.

The Vaults are kept clean and sparkling by a system of electrostatic dust and grime removers. Repairs were once done by robots which now rest in Cybernetic senescence next to stocks of repair parts and materials. None of these are salvageable by PCs. Maintenance is currently carried out by the Guardian Robot when it is not puttering about the Bone Garden. The entrances to the heart of the asteroid's computer center, robot storeroom and other facilities are under 5 meter thick, 10 meters on-a-side slabs of floor material. These are quite well hidden and secured; entrance to these areas is virtually impossible without extremely heavy equipment that probably couldn't be brought into the vault in the first place.