With Monument and Might, GU #52, Kurn's Tower will be opened! Well... Sort of.

The doors are still closed, but the Burynai have burrowed up under the tower and breached the fortifications. It seems that when Najena cast her spell to expose the void anchors across Norrath the illusion that masked the Void’s affect upon Kurn’s Tower was destroyed! 
The Burynai are now worried for their Haggle Baron, an ancient iksar they worship as their Shinie King. The single group instance of this zone is called Kurn's Tower: Breaching the Void. And you will indeed be breaching the void!
First you must aid the Burynai in their excavations before they will ask you to go in on their behalf. They're very concerned about these events and want to ensure that their ancient treasures are safe.
Adventurers who can tackle Miragul's Phylactery: The Crucible should find that Kurn's Tower: Breaching the Void is a good test of their skill. And they would do well to take care, as traversing the tower will take great skill and patience!
There are three levels that will need to be conquered and along the way, there will be puppet strings to be cut as well as some other pitfalls. Be sure to bring your parachutes!This is just the beginning of a monumental story, so expect a twist at the end of this dungeon that will lead you onwards and upwards.