Question about secret passages in ooze pit

GWiki "suggests" they are there but of course doesn't flat out reveal them.

I recently got Light of Deldrimor and went into the ooze pit to try it out.
Had no trouble finding the ghosts and hidden treasures, but no sign of secret passages. I probably wasn't using it correctly...or are they really there?

Any suggestions?

Thanks.

http://gw.gamewikis.org/wiki/Arachni%27s_Haunt

theres referance to what your talking about in this link. hope it helps.
the passage is on lvl 2.