Since the Vrykul are using the undead to dig a tunnel to Gjalerbron, players will move through the undead-infested tunnels. While there is an undead-infested tunnel here, this info may refer to Utgarde Keep proper.
It was previoulsy reported by playtesters at Blizzcon and the Leipzig Games Convention that Utgarde Catacombs was the first wing of the Utgarde Keep instance, with the mini bosses fought at the Ring of Judgement being actual bosses along with the current three, and area details of the Keep and Catacombs combined. This was later partially reconciled with the Catacombs being thought to be the uninstanced lobby of Utgarde Keep, but when WotLK was launched it was confirmed that they are separate, albeit related and close by areas.
|Utgarde Catacombs "Run Through"|