Sezz'ia was an outpost of Menzoberranzan's House Shobalar, where they conducted their arcane researches.


When around 1379 DR, House Shobalar was destroyed when the tunnel leading to it was sealed.

In 1479 DR, however, House Faen Tlabbar discovered a way to it and sent an expedition. When nobody of that party returned, an alliance of House Xorlarrin, House Melarn, and Bregan D'aerthe hired adventurers to investigate.[1]


  1. James Wyatt and Logan Bonner (August 2012). Council of Spiders. (Wizards of the Coast), p. 9.