The 13th layer of the Abyss is called Blood Tor. Supposedly once the site of a major incursion by the baatezu of the Nine Hells, it is now a realm of bad luck, misfortune, and evil fate. The layer, in general, consist of a vast plain with occasional stretches of deserts and sparse woodlands. A reddish ocean also dominate the layer, and it serves as home to the "bitch goddess" Umberlee. The Lady of Misfortune, Beshaba also makes this layer her home...her realm containing her totem animal, the black stag. The demoness Asima and her Vile Oracle has been sighted in Blood Tor as well. Two noteworthy fortresses can be found in the 13th layer of the Abyss: the now sundered fortress Malevolus, and Gallowshill, controlled by a powerful marilith named Taramanda. Her sister Alamanda was the consort and second in command of the balor who used to rule Malevolus before its fall.

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