Foundry

Foundry is a multiplayer map released for Halo 3 as part of the downloadable Heroic Map Pack. It was made available on December 11th, 2007. It is primarily intended as a forge map, and almost all features of the map are non-static and forgeable. New to forge is the ability to add walls, fences, stairs, bridges, tunnels, shield walls, sign boards and man cannons.

When Forged, it can be turned into almost anything imaginable. A hint for forge is not to randomly place man-cannons. If placed in random places, you will probably hit a ceiling.

Trivia

 * There is a crane on this map, as well as two shipping areas: A and B. Most of the boxes have "P425" printed on them, indicating possibly that that section of the foundry is Section P425, or it could be a serial number of some sort.
 * A giant soccer ball was included in this map's Forge palette. Bungie has stated that soccer games (using hammers) actually works quite well.