Tourists walking up the steps of the Pyramid of the Sun in Teotihuacán, Mexico, 1969

In Teotihuacán, the camera zooms in on tourists walking up the steps of the Pyramid of the Sun, Mexico, 1969. Teotihuacán is a vast Mexican archaeological complex northeast of Mexico City. Running down the middle of the site, which was once a flourishing pre-Columbian city, is the Avenue of the Dead. It links the Temple of Quetzalcoatl, the Pyramid of the Moon and the Pyramid of the Sun, the latter two with panoramic views from their summits. Artifacts in the Museum of Teotihuacan Culture, on-site, include pottery and bones. The Pyramid of the Sun is the largest building in Teotihuacan, and one of the largest in Mesoamerica. It is believed to have been constructed about 200 AD. Found along the Avenue of the Dead, in between the Pyramid of the Moon and the Ciudadela, and in the shadow of the mountain Cerro Gordo, the pyramid is part of a large complex in the heart of the city.