The Supply Caches are a feature in Halo 3: ODST. They are secured rooms in the city of New Mombasa, filled with supplies such as weapons, ammunition and in some cases, Mongooses. They are unlocked by finding Audio Logs. There are 7 available supply caches. The supply caches are marked on the map with the Superintendent icon. The interior, and sometimes the immediate proximity, of a Supply Cache is marked with symbols used by the Huragok, the center one of which usually depicts the Superintendent's avatar. To open the door, the Rookie must stand in front of the door's camera. The Superintendent will then open the door for the Rookie if he has unlocked this cache by finding that Cache' needed Audio Log.