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 “trajan”

3 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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Verified3 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

3 places

Hydraulic works

🇩🇿 Algeria · Fortress

Ad Maiores

Roman to Byzantine (104 CE–7th c. CE) · Roman

Trajanic desert camp 130×80 m anchoring Fossatum Negrine segment.

✓VerifiedUNESCO

🇪🇸 Spain · Hydraulic works

Segovia Roman Aqueduct

Roman Imperial (mid-1st to early 2nd c. CE) · Roman Hispania Tarraconensis (Segovia)

Augustan 28.5-m 167-arch granite aqueduct 20 km 30 L/s without mortar, UNESCO 311.

✓Verified

🇪🇬 Egypt · Hydraulic works

Mons Claudianus — Roman Granodiorite Quarry

Roman Early Imperial (68–300 CE) · Roman Imperial (Trajan/Hadrian)

Mons Claudianus is the Trajanic Roman quarry complex (98–117 CE peak) in Red Sea Mountains 500 km S of Cairo at 700 m, extracting Tonalite gneiss (Claudianus granodiorite grey with black feldspar…