This little stream runs year round and after about a half hour of hiking you come to a slot canyon that must be waded to reach a very nice waterfall. It is not far from the Kolob Canyon section of Zion.
I simply felt that the interest of the photo was the falls and the ladder so I wanted to darken the edges to keep the eye more contained there. Perhaps I over did it. It was a very dark location except for a bright light from above so I also wanted to darken to create a more less even border.