I have been wondering around Inog Maho Daar for quite a while and I need a hint.

It seems like I have gone over the whole thing, but I know I haven't because I haven't found anything but monsters and chests. I am back at the first room where you enter this place and was wondering if someone could tell me which of the 4 ways I need to go (there are 4 paths to choose from here). Thanks!
