The Foundry is one of the locations in the Realm of Outworld and both a level and a walkthrough area in Mortal Kombat Shaolin Monks. Like many locations, it is based on an arena from Mortal Kombat II, in this case, the Armory. This is the last stage of the game after accumulating enough victories in Outworld.
The Foundry is accessible through the Portal and plays host to a foundry that makes powerful weapons. It is full of demon soldiers and Onis. Steel mills and molten lava pits abound, things can prove tough for the player. Through a somewhat lengthy puzzle, the player is required to forge an axe that can shatter the crystalline barriers locking the gateway to Shao Kahn's Arena. This is where Liu Kang and Kung Lao fight Shang Tsung, Kintaro, and Shao Kahn in the final battle. Just beforehand, Kitana and Johnny Cage are found imprisoned inside the arena. By talking to Kitana thrice, you can walk down another pathway that leads to another prison where Sonya Blade and Kano are being held prisoners, and where a battle with the latter occurs with Jax Briggs as an ally.