Search for the Lost City of Gold Flamholc. The History Channel summary: "In the 16th century, Spanish conquistadors swept through Peru in search of great golden treasure. But when they stormed the Incan stronghold of Vilcabamba in 1572, they found the city deserted, burned, and stripped of its wealth. Legend says that the Incas had retreated deep into the jungle and built another magnificent city in an inaccessible quarter of the cloud forest. For more than four centuries, explorers, adventurers, and archaeologists have searched for the gold and riches of the Incas. Now, we follow Tahir Shah, who teams up with Pancho, a Machiguenga warrior who claims
Machu Picchu prevent it from running down the mountain. Similar layering protected the large city center from flooding. Multiple canals and reserves provide water throughout the city that could be supplied to the terraces for irrigation and to prevent erosion and flooding. The Incas never used wheels in a practical way, although their use in toys shows that they knew the principle. The use of wheels in engineering may have been limited due to the lack of strong draft animals, steep terrain and dense vegetation. The approach to moving and placing the enormous stones remains uncertain, probably involving hundreds of men to