Sires, it's a puzzle, did you see the T-block falls f you get from the left of it ? Try etting on the rightside. Also when you die on a checkpoint it resets the game for you.
This secret is starting to make me mad.... I have no idea how to get up there, and from the point that I can reach with that bubble, I don't see any stars.
@GIS: I DID jump over the goal, but as it said there, there was nothing. And I went all the way to the right to the bubble (which, by the way, didn't last long enough to get me up the mountain wall).
Nice level. As to the secrets: I looked everywhere (more than once, look at my score) and didn't find anything. I spent hours trying to get into the second cave, didn't find out how though.