The Narrows in Zion National Park as the walls begin to glow. The Narrows is the deepest slot canyon in the United States, and at various times of the day the walls will glow with beautiful reflected light. It's the only place I know where clear skies is the best forecast you can hope for. Equipment and Settings: Canon 5D MkIII, 16-35mm lens, polarizer and tripod, ISO 100, 22mm, f14, 13 second exposure.