I'm at the sloth village stage on Ice Age 2, where Sid is hanging upside down, and you need to scale the volcano to save him. I've placed both pebbles in the 2 holes, however, now I cannot jump over to the other side once on top of the huge rock (which grew as a result)? I seem to be hitting the zip rope which is blocking me from reaching the rock ledge. I've also slid down the rope and tried jumping off to the right hand side with no luck? What do I do from here? I've tried for days to get passed this stage?