The Central Dynamo is a room in Metroid Prime and is the location of the Cloaked Drone and Power Bomb upgrade in the Phazon Mines. Four Ice Troopers patrol the area after the drone is defeated. Just after Samus defeats the Cloaked Drone and before she gets the Power Bomb upgrade, she has to enter a small hatch which leads underneath the floor. There, she has to move through a maze of electric streams, where she eventually gets the Power Bomb upgrade. The maze is made out of two types of "walls": white, stable streams of electricity, that deal damage to Samus and knock her back, an yellow currents. The latter are unstable and will not always function. Instead, they will flash on and off. This however does not decrease the damage taken, and seem to cause a bigger knockback.