A towering tomb capped by a domed 'bubble' world whose sand-blasted top forms the fifth floor's Air Quadrant.
The Necropolis of Anser is the vast tower the party lands atop on the fifth floor — its dome-capped summit a bowl-shaped Air Quadrant swept by daily sandstorms, its subterranean depths a booby-trapped brick tomb adorned with reliefs of a flaming, screaming pterodactyl. The bubble is one of 1,172, each a self-contained snow-globe world split into Land, Sea, Air, and Subterranean quadrants; here the ground and sea lie far below the dome, which rises four or five kilometers to a shimmering forcefield ceiling. The party cannot descend into the subterranean tomb until their own quadrant's castle is liberated.
Hump Town and a distant, ceiling-brushing Air castle sit within it.
A crudely-sculpted stone bowl atop a huge carved tomb-tower, its dome rising several kilometers to a shimmering forcefield sky; sand-choked winds by day, a screaming-pterodactyl motif carved in its subterranean brick halls.
The setting of the fifth floor's Air Quadrant — a tomb-topped bubble the party must conquer to descend.