[Daily Photo] Shadow of a photographer

This photo was taken at Yellowstone National Park. The shadow in this photo is, as you can guess, me. We were visiting West Thumb Geyser Basin that morning. When walking on the boradwalk, at first my attention was focusing on the scene of the Yellowstone Lake on the far side, then I looked down and found that my shadow on the ground was really interesting. So I took this photo.