Moray or Muray (Quechua) is an archaeological site in Peru approximately 50 km (31 mi) northwest of Cuzco on a high plateau at about 3,500 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 approximately 30 m (98 ft) deep. As with many other Inca sites, it also has a sophisticated irrigation system.
The purpose of these depressions is uncertain, but their depth, design, and orientation with respect to wind and sun creates a temperature difference of as much as 15 °C (27 °F) between the top and the bottom. It is possible that this large temperature difference was used by the Inca to study the effects of different climatic conditions on crops. Speculation about the site has led to discussion about Moray as an Inca agricultural experiment station. Its microclimatic conditions and other significant characteristics led to the use of the site as a center for the ancient study of domestication, acclimatization, and hybridization of wild vegetable species that were modified or adapted for human consumption.
During the rainy season of 2009-2010, the region of Cusco received high levels of precipitation that are atypical, which caused permanent damage to the ruins of Moray. The terraced levels of the complex, which are constructed from stone and compacted earth, were damaged extensively as the excessive rain waters undermined the ground beneath the structure.
The eastern side of the principal circle collapsed during the month of February 2010, causing concerns about the permanence of the site as a top tourist attraction in Peru. A temporary wooden support structure was erected to prevent further collapse until reconstruction work could begin.
According to travel writer Paul Jones, "Although repair work at Moray continues to restore the site to its original state, lack of funds and continuing annual rainfall hinder progress. This interesting archaeological site which forms an important part of tourism to the region continues to be at risk of further degradation, should the repair work not be completed and maintained for the future years."