Inca Bridge Inca Bridge The Inca Bridge or Inka Bridge refers to one of two places related to access to Machu Picchu, in Peru. One of the two was built by the Incas as a secret entrance to Machu Picchu for the Inca army. This Inca Bridge is a part of a mountain trail that heads west from Machu Picchu. The trail is a stone path, part of which is cut into a cliff face. A twenty-foot gap was left in this section of the carved cliff edge, over a 1,900-foot drop, that could be bridged with two tree trunks, otherwise leaving
Machu Picchu were not perfect, as studies of the land show that there were landslides that happened during the construction of Machu Picchu. It can still be seen where the terraces were shifted by landslides and then stabilized by the Inca as they continued to build around the area. It is estimated that the area around the site has received more than 72 inches of rain per year since A.D. 1450, which was more than needed to support crop growth there. Because of the large amount of rainfall at Machu Picchu, it was found that irrigation was not needed for the terraces.