constructive-aspects
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Hydraulic engineering and soil
A stone city built on top of an "isthmus" between two mountains and between two geological faults in a region subject to constant earthquakes and, above all, abundant rainfall throughout the year is a challenge for any builder: to prevent all the complex falls apart. According to Kenneth Wright and Alfredo Valencia the secret of longevity of Machu Picchu is its system of drenaje.71 In fact the flo...
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