how was machu picchu formed
The world famous Inca site Machu Picchu is built upon a large wedge shaped fault block called a graben that was formed by a gradual subsidence downward of the block created by two parallel running faults, one near (north of) Cerro (hill or peak)Huayna Picchu and the other near (north of) Cerro Machu Picchu.he Inca located Machu Picchu squarely upon the ridge plateau between the two mountains realizing that the location is not subject to seasonal land slides as there are few steep slopes to utilize the lubrication of heavy rains and the pull of gravity.