Forgotten Vaults of Anudnabia, Forge of Hilbongard

 is a location in. These Daedric ruins have been buried by a rock slide and are only accessible though the nearby Omaren Ancestral Tomb.

The Daedric ruins are sealed within a large cavern. The ruins are partially flooded. Halfway though the cave, a locked and trapped door is guarded by a Frost Atronach. The door can be opened with an Ancient daedric Key which was in a locked chest in the previous cavern. Behind the door lies the Forge of Hilbongard. A large structure which dominates the center of the room.

In the center of the forge is floating chest that is locked (level 80) and trapped. The chest can be opened with the Ancient daedric Key. Inside the chest is the legendary artifact, Skull Crusher.

There are two balconies at the northwestern and southeastern ends of the room which are only accessible with levitation. The lower northwestern shelf is guarded by a Flame Atronach. There are several chests and magical items on the balconies, as well as skill books and tools.

Skull-Crusher
This quest is given by Lalatia Varian in Ebonheart, and is part of the Imperial Cult quests.

Creatures

 * Frost Atronach
 * Flame Atronach

Notable items
The following items can be found at this location:

Armor

 * Helm of Wounding
 * Dwemer Boots of Flying
 * Daedric Face of Terror

Books

 * Skill Book Armorer: Last Scabbard of Akrash
 * Skill Book Armorer: The Armorer's Challenge
 * Skill Book Armorer: 36 Lessons of Vivec, Sermon 25

Potions

 * Bargain Rising Force Potion
 * Cheap Rising Force Potion

Scrolls

 * Scroll of Windwalker

Weapons

 * Ebony Spear
 * Dwemer Jinksword
 * Skull Crusher (Weapon Artifact)
 * Chest
 * Nordic Battle Axe
 * Nordic Broadsword
 * Nordic Claymore
 * Silver Dagger
 * Silver Spear
 * Silver War Axe

Other

 * Grandmaster's Armorer's Hammer
 * Journeyman's Armorer's Hammer
 * Master's Armorer's Hammer
 * Repair Prongs (x3)

Chests

 * Wizard's Chest - random items
 * Weapon Chest - set items