This cave column is called Kubla Khan and is in Karchner Caverns south of Tucson Arizona. The entire column is 58 feet high. I used negative space and a black backround to emphasize the structure. If a cave were in bright sunlight the overall impression of color would be grey rock. Underground the color comes from yellow lighting and red iron oxide. In cave exploration there is a powerful sense of peering into the darkness to see more features. I have deliberately used just yellow, red, and a shadowy blue purple to heighten the feeling of disorientation. I used crayon on smooth paper and the palette knife with smudge to create the flowing rock.