You that one tree in the Adam Phillips level?
You know, the one that's impossible to get to?
There actually IS a way: https://www.youtube.com/watch?v=sgHfgWENwzE
A truly fantastic and amazing game, that starts out slow, but quickly proves itself to be awesome.
Also, Zillix made it for a Ludum Dare, which is crazy considering the quality and amount of content.
I highly recommend it!