Cache B is a room in the Dark Torvus Bog on Dark Aether. It appears in Metroid Prime 2: Echoes. The room simply serves as a location of an Energy Tank.

The Aether version of this room is Underground Transport.

Connecting rooms

• Dark Torvus Temple (via Blue Door, Green Blast Shield on the other side)
• Undertemple Shaft (via Secret World, normally inaccessible)

Items

Energy Tank

Requires the Super Missiles. Once the Green Hatch is destroyed, the Energy Tank is accessible.

Trivia

• Using Secret Worlds, it is possible to load Undertemple Shaft from this room. The music also changes accordingly from Dark World Swamp to Swamp Chika Dark.

Dark Aetherian Rooms in Metroid Prime 2: Echoes
Dark Agon Wastes	Portal Site • Crossroads • Save Station 2 • Duelling Range • Ing Cache 4 • Junction Site • Judgment Pit Save Station 1 • Portal Access • Dark Agon Temple Access • Dark Agon Temple • Trial Tunnel Dark Controller Access • Dark Agon Energy Controller • Trial Grounds • Dark Transit Station Doomed Entry • Oasis Access • Dark Oasis • Ing Cache 3 • Hall of Stairs • Save Station 3 Bitter Well • Phazon Site • Ing Cache 2 • Watering Hole • Feeding Pit Ing Cache 1 • Feeding Pit Access • Double Path • Battleground • Warrior's Walk
Dark Torvus Bog	Gloom Vista • Polluted Mire • Dark Falls • Dark Forgotten Bridge • Dark Arena Tunnel Dark Torvus Arena • Brooding Ground • Putrid Alcove • Poisoned Bog • Cache A Portal Chamber • Venomous Pond • Save Station 1 • Dark Torvus Temple Access • Dark Torvus Temple Dark Controller Access • Dark Torvus Energy Controller • Cache B • Ammo Station Crypt • Crypt Tunnel • Undertransit One • Sacrificial Chamber • Sacrificial Chamber Tunnel Undertransit Two • Dungeon • Undertemple Shaft • Save Station 2 • Undertemple Access • Undertemple
Ing Hive	Culling Chamber • Hazing Cliff • Central Hive East Transport • Unseen Way • Hive Reactor Hive Save Station 1 • Hive Cache 1 • Hive Reactor Access • Entrance Defense Hall • Hive Entrance Hive Portal Chamber • Staging Area • Central Hive West Transport Hive Dynamo Works • Hive Cache 2/3 • Hive Dynamo Access • Hive Gyro Chamber Hive Save Station 2 • Hive Gyro Access • Hive Ammo Station • Hive Temple Access • Hive Temple Hive Controller Access • Hive Energy Controller • Temple Security Access • Aerial Training Site Judgment Drop • Vault Attack Portal Hive Summit
Sky Temple Grounds	Profane Path • Phazon Pit • Phazon Grounds • Reliquary Access • Reliquary Grounds Ing Reliquary • Ing Windchamber Plain of Dark Worship • Lake Access • Accursed Lake Abandoned Base • Base Access • War Ritual Grounds • Shrine Access • Defiled Shrine Gateway Access • Sky Temple Gateway Portal Site
Sky Temple	Sky Temple Energy Controller • Sanctum Access • Sanctum
See also the List of rooms in Metroid Prime 2: Echoes.