Inca agriculture was the culmination of thousands of years of farming and herding in the high-elevation Andes mountains of South America, the coastal deserts, and the rainforests of the Amazon basin. These three radically different environments were all part of the Inca Empire and required different technologies for agriculture. Inca agriculture was also characterized by the variety of crops grown, the lack of a market system and money, and the unique mechanisms by which the Incas organized their society. Andean civilization was "pristine"—one of six civilizations worldwide which were indigenous and not derivative from other civilizations. Most Andean crops and domestic animals were likewise pristine—not known to other civilizations. Potatoes and quinoa were among the many unique crops; Camelids and guinea pigs were the unique domesticated animals.
Agricultural Andenes or terraces in the Sacred Valley of the Incas, close to Pisac, Peru.
Terraces were built to permit agriculture in the rugged terrain of the Andes.
Quinoa field near Lake Titicaca.
Around 200 varieties of potatoes were cultivated by the Incas and their predecessors.
The Inca road system was the most extensive and advanced transportation system in pre-Columbian South America. It was about 40,000 kilometres (25,000 mi) long. The construction of the roads required a large expenditure of time and effort.
Extent of the Inca road system
Section of the Inca road
Cusco, Peru - plaque indicating the 4 directions of the 4 regions (suyus) of the Inca Empire
A view of the Inca road climbing a hillside at the Mosollaqta lake, Peru