This cool plateau of flat rocks on the beach is found at Sunset Cliffs Park on the Point Loma Peninsula in San Diego, CA. The jigsaw pattern of cracks in the rocks reminds me of the top of Devil's Postpile near Mammoth Lakes, CA. The purple afterglow show up after the sun had already set as the sky was changing color. The color in this photo wasn't added artificially; in fact, I desaturated it a bit since it looked "too" purple in the original photo.