Sezz'ia

Sezz'ia was an outpost of the drow House Shobalar of Menzoberranzan in the Northdark in the late 14 century DR. It was where they conducted their arcane researches.

History
Around 1372 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.