Western Dun Morogh

West of the entrance to Gnomeregan is a broad valley running north from Coldridge to the mountains bordering the northern end of Dun Morogh.

The valley is clearly visible on the zone map, but has no name. No mobs are present either, but in Patch 4.0.3a the zone has been fleshed out and filled with trees. It still has no gameplay purpose.

Purpose
It is possible that this could be the area above Gnomeregan, since the dungeon's layout about matches the area, and Gnomeregan is more or less below it.