We took our first sightseeing trip when Allison’s father was in town. We went to the Sacred Valley, and we were all impressed by the ruins that are scattered throughout this part of Peru. Some of the biggest are in Moray. This is from Wikipedia:
Moray or Muray (Quechua) is an archaeological site in Peru approximately 50 km (31 mi) northwest ofCuzco on a high plateau at about 3500 m (11,500 ft) and just west of the village of Maras. The site contains unusual Inca ruins, mostly consisting of several enormous terraced circular depressions, the largest of which is about 30 m (98 ft) deep. The purpose of these depressions is uncertain, but their depth and orientation with respect to wind and sun creates a temperature difference of as much as 15 °C (27 °F) between the top and bottom. This large temperature difference was possibly used by the Inca to study the effects of different climatic conditions on crops. In other words, Moray was perhaps an Inca agricultural experiment station. As with many other Inca sites, it also has a sophisticated irrigation system.