The Undertemple is a room in Dark Torvus in Metroid Prime 2: Echoes. It contains the Power Bomb Guardian. To access the room, Samus Aran must go up a Spider Ball Track in the room's light counterpart, Main Hydrochamber, and enter a portal. Then, Samus will be at the top of a ledge with two Wall Jump Surfaces in front of it. Below, Samus can enter the main chamber with the Power Bomb Guardian. There are several Spider Ball Tracks and Bomb Slots on the walls, using one of the Bomb Slots causes damage to the Power Bomb Guardian. Once all of the Bomb Slots have been activated, part of the ceiling falls on it and allows Samus to collect the Power Bomb. When Samus obtains the Screw Attack, Samus can use the Wall Jump Surfaces to obtain a Missile Expansion.