The Energy Core is a room in the Chozo Ruins. It is accessed from the Energy Core Access and leads to the Burn Dome Access and the West Furnace Access. When Samus first enters the room, the only path she can take is the hall on the left that goes past a Stone Toad to the Burn Dome Access. When Samus returns with the Morph Ball Bombs, she can use them to kill the Stone Toad and access a Bomb Slot. This Bomb Slot starts a timed sequence of activated Bomb Slots throughout the room. If Samus reaches all of the Slots before time runs out, a number of platforms will raise up and the West Furnace Access can be reached. There are also a number of Shriekbats in the room.