Mantol-Derith

Mantol-Derith was a city situated in a huge underground cavern three miles below the surface.

Geography
It was heavily guarded and protected by strong magic. Its exact location was not known by many. The cavern was naturally formed by water due to its proximity to the Darklake, and was filled with waterfalls, pools, and streams. Its walls were filled with multicoloured crystals and gems. Bridges across the various streams were carved from crystal. The nearest drow settlement to Mantol-Derith was Menzoberranzan, but was formerly Ched Nasad.

Notable locations

 * Central market : The market was ringed with giant fungi and merchants set up stalls selling fruit, perfume, woods, and spices beneath them.
 * Warehouses : There was one huge storage area at each of the four corners of the cavern, representing the four factions present in the city.