MM: Hole in ceiling - whaaaat?

[Hylian Lemon]

In Majora's Mask, go to the Bombers' hideout, in that sewery place. If you look at the ceiling, you will notice a square hole that goes up a few feet and then stops, above the first platform. Is it there for a reason? Does anybody know anything about this?

[Shadow]

Hmmm, thats interesting and ill prolly go and check that out as well.