Shadow Vault

The Shadow Vault is a neutral quest hub for the Knights of the Ebon Blade, located near Aldur'thar: The Desolation Gate in northern Icecrown.

Wrath of the Lich King
The Shadow Vault was originally controlled by the Scourge, adventurers are given a chain of quests — started by either Thassarian onboard the Skybreaker or Koltira Deathweaver onboard the Orgrim's Hammer, the flying battleships that patrol the skies of Icecrown — adventurers work with the Ebon Blade in taking it as a base. After taking the Shadow Vault, the Scourge were constantly attacking it.

Once in Ebon Blade hands, the Shadow Vault has all of the amenities of an inn: An innkeeper, vendors for general goods, trade supplies, and food. There are also runeforges for death knights, a flight path, and the quartermaster for the Knights of the Ebon Blade. The Shadow Vault's quests focus on taking out Jotunheim, a vrykul town in which the vrykul engage in combat to be ascended to Ymirjar as well as the nearby scourge saronite mine, the Weeping Quarry.

Cataclysm
At some point after the Lich King's fall, Kingslayer Orkus brought a frostwyrm named Kasha to the Shadow Vault where the Knights of the Ebon Blade nursed her back to health. The Shadow Vault is not seen in Cataclysm and is only mentioned.

Shadowlands
The Ebon Blade lost control of the Shadow Vault when the Scourge attacked and caught them by surprise. Seeking to reclaim the structure, Duke Lankral recruited champions of the Horde and the Alliance in wresting control away from the enemy.

Flight

 * Death's Rise, Icecrown
 * Crusaders' Pinnacle, Icecrown
 * Argent Vanguard, Icecrown
 * Argent Tournament Grounds, Icecrown
 * Bouldercrag's Refuge, Storm Peaks