The surface of Amsed is airless, arid, and blighted. All of the inhabitants live below ground or in enormous oceans beneath ice caps. The surface can only be accessed through teleportation or a few gated airlocks. A handful of adventurous souls have built magical arcologies on the surface.
Fauna & Flora
Plants are non-existent, except as imports in the surface arcologies. Fungi exist and can grow to enormous sizes.
The caverns are full of numerous gemstones, many of them unique to the world and magical in nature. Most people avoid living nearby active volcanic regions, so not all gems are equally easily reached. The stone common to the settled areas is strong, able to withstand enormous compressive force, and is therefore popular as a base for large buildings.