The Vault Door is an obstacle in Metroid Prime Hunters. It blocks the way to further areas of the Ice Hive and must be opened to get to said areas. Resembling a black door with a yellow circle on it, it is attached to two electric currents, which hold multiple Barbed War Wasp hives and pass over the room's Energy Routers. To open the Vault Door, Samus must activate the Energy Routers, destroy the hives, go back up to the top floor with the Jump Pad and activate the Door Controller Unit. After this, it will coil down and form a ramp for Samus.