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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Places tagged “secondary dam” in Yemen · Mysteria

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Places tagged “secondary dam” in Yemen

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🇾🇪 Yemen

#secondary-dam

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🇾🇪 Yemen · Hydraulic works

Sadd al-Arim Secondary Dam

Sabaean Kingdom 750 BCE - 570 CE · Sabaean (Saba) kingdom

750 BCE Sabaean secondary saddle dam (420 m) and north sluice extension of Marib, doubling irrigated area via 2.1 km north canal.