Huayna Picchu, Cusco Region — the steep peak rising behind Machu Picchu, its summit holding a small temple reached by near-vertical Inca steps. From the top, the citadel below appears as a single organic form growing from the mountain, surrounded on three sides by the deep gorge of the Urubamba River.
© W. Bulach, CC BY-SA 4.0, via Wikimedia Commons
