While trying to figure out what to do with this scene, I used one of my frequent wide angle tips and that was to get in close to something interesting in the foreground. I didn't have to get too creative with that advice here because the only foreground I could get close to and still see the waterfall (Pluto Falls) was ... the wall. Fortunately, that worked out OK.
I especially like how the man-made lines in the stone stairs and wall interact with the natural lines in the rock. The vertical lines of the water and gorge cutting through the rock intersect those horizontal lines and draw the viewer's eye into the frame.