The Underdark is a a series of connected caverns that form a world unto itself. The primary sections are located under the mountains in the south, slightly to the east of the main Dwarven citadels. However, the Underdark has many tendrils stretching through the other empires.
While many horrendous monsters live in the Underdark its primary residents are the Drow who have managed to build a substantial empire out of the reach of the sun. Many Drow cities residy in the larger caverns of the Underdark. None compare to the main city of __________. While the scale of ________ is beyond compare in the Underdark its grandeur lies in its construction from massive crystals, taller than the highest buildings above ground.