I had a chance to visit an indoor rock climbing facility in League City, Texas this weekend called Stone Moves. It's a very large facility with artificial climbing surfaces built into the walls that simulate actual cliff faces. Rock climbers pactice here - photographers stay on the ground!
The photo was shot with my Canan 40D and 17-55 IS f/2.8 Canon zoom lens. Post-processing: Photoshop CS3 High Pass Sharpening > > Virtual Photographer Anvil Filter at 69% Opacity.