Twin Fires is a room in the Magmoor Caverns. It appears in Metroid Prime. It consists of two large caves, each a lava pool, a Magmoor and a central rock pillar, connected by a very brief tunnel. Horizontal flamethrowers are present in the tunnel and near the door to North Core Tunnel, making either the Ice Beam or the Morph Ball a must. Two Grapple Points hang over each pool, making getting across the magma much easier with the Grapple Beam. Without the Grapple Beam, crossing each pool is a matter of shooting down a stalactite from the ceiling with a Missile to make a ledge to cross. In one case, this rock kills a Magmoor when it falls.