The Pit Tunnel is a room in the Magmoor Caverns. The room is extremely hot and will damage Samus if she does not have the Varia Suit. In the center of the room, there is a large tube containing lava. This tube sends of four streams of fire at regular intervals. The two sections of the room are separated by a fence. Samus can only get past by using the Morph Ball to go underneath the fence. This small area has a number of Triclops in it. On later visits, Samus can use the Space Jump Boots to just jump over the fence. One section leads to the Lava Lake while the other leads to the Triclops Pit.