Augustus Henry Julian Le Plongeon was a British-American archeologist and photographer who studied the pre-Columbian ruins of America, particularly those of the Maya civilization on the northern Yucatán Peninsula. While his writings contain many notions that were not well received by his contemporaries and were later disproven, Le Plongeon left a lasting legacy in his photographs documenting the ancient ruins. He was one of the earliest proponents of Mayanism.