Skavenblight

Skavenblight would be the "capital city" of the Great Underground Empire, at least if it were possible for Skaven to agree on something as important as a captial city. The best way to describe it is a giant pile of rats that explode (both the rats and the pile). It is located north of Estalia and north-east of Tilea, or where Andorra would be in the Old World.

Geologically, Skavenblight resides in the middle of a fetid swamp filled with dangerous wildlife, which fill the swamp with dead Skaven, which fertilize plants which produce black rice like grain for the rats to eat, perpetuating a gruesome cycle of borderline cannibalism that represents their society unnervingly well (borderline? Skaven are fine with and regularly practice actual cannibalism). Skavenblight proper is a ramshackle rat's nest of factories, slums, warpstone generators and narrow mines laid out in no particular order with little forward thinking as to how these structures will interact with one another. These teetering buildings of rusted metal, mud, and rotted wood are held together by the flimsiest of rope and are perhaps as big a danger as the deranged ratmen that reside in them. The labyrinthine layout combined with the unorthodox and unstable architecture make Skavenblight nigh impenetrable to foreign adversaries, further proof that the only enemy truly capable of dealing a decisive blow to Skaven are the Skaven.