Canal with Qolqas (storehouses) and terraces in agricultural sector.… | 
Main drain of Machu Picchu, sometimes called the Dry Moat, this drain… | 
Drip line cut into stone behind southern Wayrona near the Sacred… |
Engineers strategically placed 129 surface drainage outlets in walls… | 
Typical surface drain outlets in building walls at Machu Picchu. | 
Interceptor drain running across agricultural sector and emptying… |
Fountain 1, Immediately after excavation. Opertional hydraulics… | 
Main Inca trail from Machu Picchu to Urubamba River lying adjacent to… |
