Gift of Eomar
In the treacherous mountain region east of the Glass Desert, the dwarven nation of Rorxammar can be found completely underground. Ancient treaties with the elves of Aelostrian decree that they not live on the surface, which suit the nature of the dwarven society just fine.
With old age to a dwarf comes a mysterious compulsion to dig endlessly downward into the ground. Once this neurosis takes them, they are considered gone forever and burial rites and ceremony are imminent. Often their tunnels become unstable and cave in, forever to be their tome and last resting place.