Okay, so, I've gotten past the big battle at Ogre's Pass, gone underground, and have now found myself on some sort of platform with three paths leading south, but every time I try to walk down any of them, the screen flashes green and I'm propelled several squares backward, but with no message to indicate what I'm supposed to do to fix it.
I have a feeling I'm missing something really obvious here.
Is this the way I'm supposed to proceed? If it isn't, then where did I miss the fork? If it is, how do I get past the green barrier? Did I miss something earlier in the dungeon?