When you first go to Silk Road, Feizhi should appear behind you, screaming about her vision. ((I don't know if the same hapens if you didn't meet her before...I always met her at the temple.)) The only thing you can do here now is get an item, using Growth and Frost. After, you mus head North, off the road, and into Altin. Complete the mission of defeating the Guardian Statues, making your way through Altin Peak, and finally defeating Hydros Statue. Get lift, and continue through the rest of the mines.
Once out of the mines, you can head to Lama Temple to the left, go through a lengthy dialogue, and Ivan will learn Reveal from Master Hamma. Now, exit Lama Temple, head right on the map, and enter Silk Road.
You should be able to use Reveal to reach Hamma, Feizhi, and Tsu ((is that his name? I don't remember...)), and use Lift to help him. After this sequence, every time you enter Silk Road from now on, the rocks will be clear.
WHEW! Long, but helpful, I'm sure. Enjoy.