British archaeologists Leonard and Catherine Woolley in 1930 upon their discovery of pottery pipes that were used as a sewage and rainwater network in what is considered the first water drainage system in history before about 4000 BC. Ur (Mesopotamia). pic.twitter.com/H8jFFxOs4h
— Tudor architecture🇬🇧 (@ArchitectureTud) August 17, 2021
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