Ched Nasad, or the City of Shimmering Webs, used to lie in a great V-shaped cavern under the High Gap in the northern Graypeak Mountains. The grotto is nearly a mile high and a half mile wide at its largest. While the cavern roof is relatively flat, the grotto's walls are so steeply pitched as to make it impossible for creatures other than spiders or lizards to stand upright. The drow of Ched Nasad had built their city atop slender filaments of magically calcified webbing that endlessly danced and flickered with the radiance of faerie fire. Over one hundred major layers of webwork once stretched across the cavern, and hundreds of other near-vertical webs provide access from one level to the next. Individual dwellings, which resembled great hollow cocoons, were constructed both above and below the layers of 'Lolth' induced webbing. Along the cavern walls, endless sheets of water drained down from the mountains above, nurturing a veritable jungle of molds, lichen, and fungi tended by the city Houses' slaves. The narrow cavern floor was reserved for small herds of deep rothé tended by goblin shepherds. It is located in the Upper Northdark. With its destruction, and the huge debris field in this once pristine floors of Ched Nasad it will take many, many years to reclaim the floors. It will be far longer for the city to ever be rebuilt in some way, of its past glory, since in reality the worship of Lolth has ended there.

The city had different factions, or houses, all of which vied for power. It was under the indirect rule of House Nasadra which was governed by Matron Aunrae Nasadra, who succeeded her grandmother as Matron Mother in 689 DR. Recently, there was a revolt in Ched Nasad, which resulted in the near-total annihilation of the city's core, leaving only its outer chambers intact.