Hydrologic Engineering Marvels Hidden in History

June 15, 2020 - General
The great Nile dam, at the head of the first cataract of the Nile, is 600 miles above Cairo. OSU Special Collection. (Public Domain)

Everyone is familiar with the Seven Wonders of the Ancient World, but according to Scottish historical writer, stone mason, and founder of the Caithness Broch Project, Iain Maclean, while these “tourist traps have been done to death…


Source: origins

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