City Commons Carved from the ancient rock of this planetary chunk, this chamber is about sixty yards in diameter with a domed ceiling that is one hundred feet tall at its highest point. In contrast to the spaceport facility, which glows as if illuminated by a supernova thanks to high-powered lamps, this commons is more subtly lit. Shadows fill much of the higher reaches of the dome, while soft bluish-white lights provide a twilight glow to the rest of the chamber. Archways lead to the spaceport via the customs station, a tavern, and the planetoid's commercial and residential districts.