Introduction to the Sun-Tuan Stone: In the ancient city, the most famous thing is a strange boulder standing on the top of the mountain, which is called "Sun-Tuan Stone". The Incas called it "Sun-Tuan Stone" (Intihuatana). The Sun-Tuan Stone is in the shape of "convex", which is the soul of the Incas. The Incas believed that the place where the boulder stood was the center of the world. Legend has it that during the Sun Festival every winter solstice, in order to pray for the sun to return, the Incas would symbolically tie the sun to this boulder. In addition, people use the shadow of the "sun-tied stone" to judge the date and time to arrange sowing and harvesting. The corners of the base stone also serve as a compass. print