The Hall of Combat Mastery is a room in Sanctuary Fortress. The Spider Ball is required to enter a hole in the top of a wall to access Central Area Transport East, while a Power Bomb can destroy the tunnel leading to the portal, and allowing access to the rest of the room which leads to the Agon Transport Access. The room also features several breakable panels similar to that of the Mine Security Station in Metroid Prime (although they are much sturdier than in Prime). The Dark Aetherian version of this room is Culling Chamber.