The Battleground is a room in the Dark Agon Wastes. It is the Dark Aether counterpart to the Central Mining Station, and as such is extremely similar. The room connects the Warrior's Walk, by a Green Blast Shield, to the Double Path, by both a White Hatch and a Purple Hatch. The room is sandy and rocky, with two levels. The lower level has a number of Light Beacons surrounding a Safe Zone. There is a Dark Temple Key, in the Safe Zone, but it can only be obtained after defeating six Warrior Ing. The upper level can only be accessed from the upper path of the Double Path, which in turn can only be accessed from the upper level of the Doomed Entry. There are a number of invisible platforms that can only be seen using the Dark Visor. The other end of the level has a Flying Ing Cache that contains a Sky Temple Key.
|Flying Ing Cache||1||Once|
|Warrior Ing||6||First Visit|
|Warrior Ing||2||Later visits|
Rooms in Metroid Prime 2: Echoes