level6, hidden dualty

[mandi2]

hi folks,
now i'm playing HD and have a lot of fun with it. but now i'm stucking in lev6.
i have all the items, know how to come to the boss, but i'm missing the last key, and there is an area in floor2(right sides) i cant get to.
could someone tell me what a made false?
thanks

[TheGeepster]

You have to get at that section from above on Floor 3/3.

From the first room where you can go down to the second floor, head north, and around until the path splits off. Follow the lower path and you'll reach the room where you got the lens (I believe) push a block aside and go into the next room. There is a well-hidden but slightly visible place to bomb. Viola!

(This one had me stumped for a bit as well.)