that pic makes it look wicked.

I thought this was much taller until i saw the guy behind the boulder, lol! still looks cool though.

It's probably 18ft to the very top. It is on a hill so that makes it feel taller. About 3ft from the top though you are home free. 4-5 short moves can take you up it but it lays back at a pretty good angle until the last move over the top. It's pretty fun though and a little tough till you figure it out.