Crocomire secret room

From Glitches

From the game Super Metroid for the Super Nintendo

If you use the Grapple Beam right as Crocomire falls in, you will grapple beam under the level. When you release, you'll fall through 2 times and land on the same screen in mid air, taking damage. You cannot get out, and you will have to die or restart your game. If you X-ray here, though, the results will be very strange.

Submitted by: Thor