Stock photography, photos: tetrapylon, Palmyra, Syria Stock photos of Sunset behind the tetrapylon, archaeological ruins at Palmyra, Syria. Photograph: © Bill Lyons Click for a larger image and more information Keywords associated with this stock photo: Palmyra, Syria, sunset, red, Palmyra, tetrapylon, Zanobia, tourism, archaeological, ruins, travel, tours, archaeology, syrian, middle east,