Spinebreaker Pass
From WoWWiki
Spinebreaker Pass is a straight but narrow chasm located in the far southeastern Hellfire Peninsula. It is a safe way for Horde to travel between Zeth'Gor and the Legion Front via Void Ridge without having to sneak past the Alliance forces at Expedition Point.
Alliance players can also use the pass to access Void Ridge without having to cross through the Legion Front, as there are no Horde-aligned npcs of any kind in the pass, despite its name.
