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This precision, combined with the rounded corners of the blocks, the variety of their interlocking shapes, and the way the walls lean inward, is thought to have helped the ruins survive devastating earthquakes in Cuzco.
The longest of the three walls is about 400 meters. The estimated volume of stone is over 6,000 cubic meters.
Seven hundred plates were removed, and added to two hundred cargas of gold transported back to Cajamarca.
The site was destroyed block by block to build the new Spanish governmental and religious buildings of the colonial city, as well as the houses of the wealthiest Spaniards. 29]): "to save themselves the expense, effort and delay with which the Indians worked the stone, they pulled down all the smooth masonry in the walls.
In the words of Garcilaso de la Vega (191 [1609: Part 1, Book. There is indeed not a house in the city that has not been made of this stone, or at least the houses built by the Spaniards." On 13 March 2008, archaeologists discovered additional ruins at the periphery of Sacsayhuamán.
is a citadel on the northern outskirts of the city of Cusco, Peru, the historic capital of the Inca Empire.
Sections were first built by the Killke culture about 1100; they had occupied the area since 900.
Estimates for the weight of the largest andesite block vary from 128 tonnes to almost 200 tonnes.