As Samus rides the zip line, she will come in contact with an Energy Tank atop a pedestal that is suspended in the acid, and automatically collect it. The switch to bring the zip line over to the left is found directly above the machine's slot for the Morph Ball. She can morph into a slot within the machine, and the resulting surge of electricity reactivates all zip lines in Kraid, including one in this room. Once Samus enters the room, the door locks behind her. The acid pits have been consolidated into one large pit near the right side, with the ground on the left having a slight divot in the center.Īn ancient Chozo machine is found here. It is about the same length as it was in the original Metroid. Ruined walls with cracks can be seen in the background. Its ceiling and floor are now made of solid material with various Chozo symbols etched into them. In Zero Mission, the room's appearance has been changed and it is now different from the other two corridors above and below it. The room is constructed from blue bricks and tiles, with three pits of acid in the floor and two Air Holes in the floor, and three silver pillars near the left side. It is one of three identical corridors between the ' apex shaft' and ' Zeela-infested shaft', containing the same enemies and layout.

In Metroid, this room is optional and does not need to be explored, seeing as it does not lead to Kraid or any expansions or power-ups.

In both games, this is a corridor connecting between the two shafts on the upper right side of Kraid's Lair. 5.1 Metroid: Zero Mission: The Official Nintendo Player's Guide.

Metroid zero mission crateria map