Some quick 15-20 minutes a piece environment sketches, all based on the same theme. Used a few custom Photoshop brushes of my own, and a few from Ben Andrews [link]
I don't know if its actually because theres more in it but the path leads the eye better in the composition to the structure. Plus you have a small character and a huge city type structure so the sense of scale is clearly portrayed. I like the top waterfall image too, because that has an epic scale too.