left through the first room then right all the way down. once you fall through the shoot on the disappearing bridge, hang a left to punch though the blocks in the floor.
see diego's explanation above. working out the great temple in adventure of link wasn't exactly a cakewalk either - especially back when we had to make our own maps. it was death by reconnaissance.
otherwise, i'd say zelda dungeons are more annoying than hard. the great bay temple and some of...