Walls of Stone and Blood
Far under Vorashin, in the Underdark, is the drow city of Relonmyrazz. Compared to other drow cities, Relonmyrazz is in regular contact with the surface, though almost exclusively with Vorashin. Without the Underdark city, Vorashin might not have become nearly as reliant on slavery as it did. Even since the abolition of slavery in Vorashin, the city has maintained its tie to the Underdark.