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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Spillways tagged “hydraulic”

2 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.

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🇯🇴 Jordan · Hydraulic works

Jawa Dam South Basalt Spillway

Early Bronze Age IA · Proto-Jawa Ghassulian-Chalcolithic

120-m south spillway with ogee crest and riprap of main Jawa dam — earliest weir hydraulics.

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🇮🇷 Iran · Hydraulic works

Kebar Dam South Spillway Extension (Kebar Secondary Spill)

Mongol Ikhanid–early Timurid (1300–1400 CE) original; Safavid extension 1680 · Ilkhanid–Safavid

South-bank secondary spillway extension 0.4 km south of main Kebar arch dam (26 m high, 55 m crest, oldest surviving arch dam c.1300, already in DB as kebar-dam-qom-iran) at 1,520 m.