Ched Nasad

Ched Nasad was a powerful drow city in the Underdark which was overthrown by the machinations of Jaezred Chaulssin during the War of the Spider Queen. The Jaezred Chaulssin tried to rebuild the city in the image of a non-matriarchal society but the death of their god Vhaeraun caused them to abandon this tactic and allow the return of Lolth-worshipping drow, though the organization still holds much power over the place.

The city is found in the Middle Northdark region and is also known as the City of Shimmering Webs as it was formerly suspended one more than a hundred calcified webs.

Reference
Ched Nasad
 * Insurrection
 * Sacrifice of the Widow