In Metroid, the room is a straightforward hallway with only two exits, including the entrance. Both doors are on raised platforms comprised of blue metal, with the rest of the room constructed out of blue pipe-like material. On the floor are four bushes, also blue. This room physically resembles the "Bomb access corridor" on the other side of Brinstar.
In Victory Techniques for Metroid, Samus comes to this room after collecting Missiles in Corridor No. 4. She notices the red door and frantically runs to it to escape the Reos, only to find that her normal Beam does not open it.
In Zero Mission, the room is longer and has been altered. In the background are caves with a green hue. Part of the ceiling and floors near either door are artificial, while the rest of the room is composed of blue rock. The center of the floor is slightly raised, and two boulders are visible on either side of it in the background. A large rocky overhang now exists over the center of the room, with a small passage underneath that Samus can roll through with her Morph Ball.
Another passage is found above the overhang, with a hole leading into the ceiling and up to Corridor No. 2. While normally, Samus is required to leave the room this way, it is possible to return the way she came (see below).
- Blue-tinted shaft (via Blue Door)
- "Long Beam room" (via Red Hatch)
- "Cave shaft" (Zero Mission, via tunnel)
- Point 4 (page 58)
- "Some items are hidden deep behind the red door. You have to shoot five missiles into it in order to open the red door."
- 003 BACKTRACK FOR A BLAST (page 128)
- "Your initial beam can travel only about a third of the width of the screen - not at all useful for taking out enemies from a safe distance. Return to the blue-tinted, vertical passage and climb up to another horizontal hall. Your path will be blocked by a red hatch. Hit it with five Missiles to break it open. On the other side, you'll find a Chozo Statue holding the Long Beam upgrade."
- 009 TAKE THE HIGH ROAD INTO THE UNKNOWN (page 29)
- "Unable to leave the way that you came, you must use the Long Beam to blaze a new path by clearing away blocks that occupy a narrow passage in the rock. After you roll through the passage, jump up and climb to the area's highest reaches. You'll see that your surroundings are shaded green on the map, indicating that the path is unknown to the Zebesian mapmakers."
This description is somewhat inaccurate. It is possible to return through the tunnel Samus rolled under - by shooting at the Fake Blocks in the tunnel and quickly morphing and entering the passage so the shot does not disappear offscreen.