Grasp of Orcus
Darkstone Hall is a vast underground city. It is home to the dwarven Clan Darkstone, of which Salmon Battlebeard was formerly a highly respected member, and Eldeth Fedrun is still a member. It is ruled by King Bram Darkstone.
The Evening Group, after several weeks lost in the Underdark, finally found their way out by gaining assistance from the deep gnomes of Blingdenstone, who led them along an established trade route and up to Darkstone Hall. When the party saw the sky for the first time in weeks, it was through the outer gates of Darkstone Hall.
Three months later, King Bram summoned them all back to the Hall to discuss the horrors they had witnessed below.