Fortress Transport Access (Torvus Bog)
The Fortress Transport Access is a room in the subterranean level of Torvus Bog that accesses Samus to the Transport to Sanctuary Fortress. The bottom of this room is filled with water. Above that are multiple platforms, which are described as being part of a water purification process but are now stuck in rotation.
Rooms in Metroid Prime 2: Echoes