Eryndlyn

Eryndlyn is a drow city of more than sixty thousand. It lies in hidden caves beneath the High Moor in the Upper Underdark. Founded by drow war bands seeking to reclaim legacies of the ancient elven realm of Miyeritar, Eryndlyn dominates the northern Undermoor tunnels. (The southern Undermoor is the domain of derro and illithids, both holding vast cities in the Lower Underdark.)

Eryndlyn's far-ranging merchants periodically emerge under darkness to trade with unscrupulous merchants along the Sword Coast.

The cavern of the city is dome shaped, more than two miles in diameter. A shallow lake lies in the center of the cavern fed by two freshwater rivers and drained by a third leaving three sprawling plateaus.

Initially the city was ruled by merchant houses but three major religious factions soon came to dominate the city. The largest plateau, in the city's western periphery, is dominated by the clergy of Lloth. The northeastern plateau is controlled by Vhaeraun's followers. The oft flooded southeastern area is controlled by Gaunadaur's cultists. Although open warfare diminished long ago, hostilities threaten to tear Eryndlyn apart.

The Jaezred Chaulssin established a hidden fosterage in the city. During the War of the Spider Queen the members of Jaezred Chaulssin brought the worshippers of Vhaeraun and Ghaunadaur together and helped to unite them against the weakening worshippers of Lolth. They decimated the followers of the Spider Queen drastically.