Zion Canyon at Night, photo by Harold Davis. View this image larger.

On my way down the Angels Landing trail in the dark, I stopped at a bend where Zion Canyon spread out before me. Looking back and up, I photographed star trails against the massive rock walls.

Looking down at Zion Canyon, the darkness seemed almost complete. I used a high ISO test shot to establish the exposure value of the situation, and then burnt my battery to the bottom of the tank with this thirty minute wide-open exposure at ISO 200.