On my recent canoe trip down the Gunnison River in western Colorado, we were surrounded by tall canyon walls. I think that's the inspiration for this abstract triptych. I used some course granular pumice gel and some clear tar gel for texture.
I also used some silver leaf in the upper part of the painting, but found it too distracting (shiny), so painted over most of it. There are little silver glints that do show, however.