Not sure I'm following, could you be more specific? The dynamite should clear the way forward.
Viewing post in Gameplay/Mechanics Discussion
It's pretty much a straight path. There's a little bit of a divergence while you're still in the ruins, but just explore both ways. You have to be sure you get the dynamite for the boulder/rock later. Once you fight both ambushes and go through the little underground area though there's really only one way to go, just over to the right, up, and back to the left.