inaccessible area in level 5?

[rq6]

I've been trying to get into the area shown in the spoiler below.

SpoilerShow

I'm trying to avoid spoilers but I did look at an online guide and the area is undiscovered on their map too.
http://www.gamebanshee.com/showshot.php ... vel5_5.jpg

I'd rather not be told how to get in there, I just want to know if it's possible.

[DuLk]

SpoilerShow

Go to lvl 6, the entrance to this area is there

[rq6]

Thank you!
I'lll spend a bit more time on 6 then.

EDIT:
Found it! I searched there previously for an entrance but didn't notice it... Thanks for the hint.