The Shadowforge Lock can be found in the East Garrison of Blackrock Depths. It is a locking mechanism for a large overhead wheel that is apparently connected, via a chain, to one of two huge doors across the Dark Iron Highway at the entrance to Shadowforge City. Clicking on the lock causes it to lower, allowing the wheel to spin and the door to close. A passage inside the door then allows players to cross the highway and reach the West Garrison, the Manufactory and the Grim Guzzler, which are in the west side of Shadowforge City.
- Patch 4.0.3a (2010-11-23): No longer requires key to activate.