Nechdorf
A village. Home of Ueth, who returned here after the Emerald Serpent bit him while he was already brewing-drunk. He preached happiness, love, sex, and drugs, and asked everyone to join him in his newfound swamp paradise. A few did; the rest were later kidnapped and sacrificed by his Strange Serpent Drug Cult in the name of eternal love.
Ueth, Strange Serpent Drug Cult, Emerald Serpent, Sepulchre of the Swamp Witch
Whether Nechdorf still exists or has been wholly consumed by Ueth's cult is unstated. The village's region (likely Western Kingdom, given the Swamp Witch quest comes through Fathmu IX's messenger) is not explicitly named. The village's surviving population, its priest, and its relationship to the swamp around the Sepulchre are all open.