It's definitely not a case of a passageway being obscured, I searched very carefully, for quite a long time, and there's simply no way to make it through. The dungeon is effectively cut in half. I took a quick stab at the hex editing option last night, but it didn't work out; the characters didn't move at all from their position. (However, it was very late and I was very tired, so there's a good chance I was just doing it incorrectly. I may try it again when I have more time.)
Thanks for the help. At this stage I've just moved on, but it's really annoying. I really, really HATE missing out on any part of my games, especially RPGs, so knowing there's a significant portion of this dungeon left completely untouched, as well as the possibility of quests attached to it, just drives me nuts.
And I can't believe there isn't some routine in place to make sure this didn't happen. Diablo was able to do it years ago.
