Umpholo was a town in central-eastern Black Marsh that was populated by the Agaceph breed of Argonians.[1] In 3E 378, acolytes of Mara built a Temple of Mara in Umpholo that contained a monastery as well as a large library.[1] However, after a month, the acolytes died of Swamp rot and the Agaceph native to the town took the books of the library.[1]