Secret Canyon:
The slot canyons of northern Arizona have a mystical quality when photographed in different light. Most canyons are hundreds of feet long, and can be 50 feet deep or so, but in most places only 2-3 feet wide, and it is these convoluted sandstone crevices that allow only modest amounts of light to penetrate down to the sandy floor. They photograph like a glowing labyrinth of sandstone, as every corner looks different depending on your perspective.