Dry stone from the arable or cultural land. They serve both as cattle/sheep fences and the lot's borders. Sometimes also the dry stone terracing is apparent, often combined with parts of stone masonry (house foundations and shed walls) that are held together by a clay-cum-needles "composite" mortar. In Peru in the 15th century AD, the Inca made use of otherwise unusable slopes by building dry stone walls to create terraces. They also employed this mode of construction for freestanding walls. Their ashlar type construction in Machu Picchu uses the classic Inca architectural style of polished dry-stone walls of regular shape. The Incas
Hiram Bingham III center but a royal estate to which Inca leaders and their entourage repaired during the Andean summer. Machu Picchu has become one of the major tourist attractions in South America, and Bingham is recognized as the man who brought the site to world attention, although many others helped to bring this site into the public eye. The switchback-filled road that carries tourist buses to the site from the Urubamba River is called the Hiram Bingham Highway. Bingham has been cited as one possible basis for the Indiana Jones character. His book "Lost City of the Incas" became a bestseller upon