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Ancient pyramical complex of Xochicalco; outside Mexico City.
After the fall of the Teotihuacan hegemony and before the rise of the Toltec military state local powers rose in Mexico in the epiclassical period, AD 650-900. For easy defence they were typically build on hill-tops, like this one.
Impressively, the amount of details on Google Earth is far in advance of the textbook aerial photo in Mexico, Coe&Koontz.