Sunlight paints a rock formation in the Galápagos Islands. Cruise passenger Mary E. Mackey was relaxing on deck after a shore excursion when she noticed the evening light. Not having her 35mm camera with her, Mackey captured the image with her iPhone. “I didn’t want to miss this opportunity,” she writes.

This photo was submitted to the 2015 Traveler Photo Contest. Find your best travel photos and join the competition.