Plates of Uldum

From WoWWiki

This set of items allows entry into the Uldum complex, in southern Tanaris.

Similar in appearance to the Discs of Norgannon, found in Uldaman, they were created by the Titans.

They are not known to be represented by items within World of Warcraft.

Source

Main article: Quest:The Stone Watcher

[...] "When you have obtained the Plates of Uldum and incorporated them into your existing disc set, you may then enter the complex."