As I recall, these mountains sat near the Willkanuta Mountains. Anyway, they lie somewhere along the road between Cuzco and Puno in the Peruvian Andes.
Pisaq (also spelled “Pisac”) is a site of Incan ruins overlooking the Sacred Valley. The Sacred Valley is the river valley of the Urubamba River, which is also called the Willkanuta. This type of terracing is common around Incan sites.