An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

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Hydraulic works tagged “delta”

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🇪🇬 Egypt · Hydraulic works

Minufiyya Basin Canal & Dyke System (Nile Delta Apex Margins)

Old Kingdom to modern (4th Dyn–Aswan High Dam 1970) · Memphite–Fayum basin engineers; Islamic fellahin maintenance

Delta apex basin system 58 km NW Cairo: 22-km Bahr Shibin canal + 9 dykes forming 14 flood basins (18 km²).