I hadn't spotted your comment here, and at first, I thought this might be a Getting Over It style hill-climbing game. I spent a bit of time jumping up the slope, and eventually I got to the point where the peak met an inverted slope (part of the roof of the cave?).
Even if it wasn't what was intended with it, I still had a little bit of fun.
Good luck with the project if you intend to continue with development!