Huayna Picchu to the Gran Caverna and what is known as the Temple of the Moon. These natural caves, on the northern face of the mountain, are lower than the starting point of the trail. The return path from the caves completes a loop around the mountain where it rejoins the main trail. Huayna Picchu Huayna Picchu, , is a mountain in Peru around which the Urubamba River bends. It is located in the Cusco Region, Urubamba Province, Machupicchu District. It rises over Machu Picchu, the so-called lost city of the Incas. The Incas built a trail up the side of the
Machu Picchu more farmland to grow crops, and to steepen the slopes that invaders would have to ascend. The terraces reduced soil erosion and protected against landslides. Two high-altitude routes from Machu Picchu cross the mountains back to Cusco, one through the Sun Gate, and the other across the Inca bridge. Both could be blocked easily, should invaders approach along them. The site is roughly divided into an urban sector and an agricultural sector, and into an upper town and a lower town. The temples are in the upper town, the warehouses in the lower. The architecture is adapted to the mountains.