Machupicchu. The archeological complex is located in the top of a mountain, Machupicchu (in quechua “old mountain or the main mountain”) that gives to the citadel the name and the amazing landscape that all of us have seen. In front of it, the amazing mountain of Wayna Picchu appears (“young mountain”) in which summit and slopes, some archeological remains are located. Both summits border on the plentiful Urubamba River, that runs to the eastern, at 400 meter under the citadel.