I'm stuck in Kirsa Caverns now... I found out about the Haulers and I know how to control them and such, and I know about stress level and cave ins and jumps and switching tracks and such.
The thing is, I keep seeing all these rocks blocking my way to these emerald treasure chests at all of the stops with the hauler. Another thing, as soon as I entered the Kirlsa Caverns, I noticed to my left there was a doorway blocked by another set of rocks. I tried climbing them, but nothing worked.