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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.
🇪🇬 Egypt · Hydraulic works
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…
🇪🇬 Egypt · Hydraulic works
Roman Imperial (29 BCE–211 CE, active to 4th c) · Roman Imperial
Mons Porphyrites (Gebel Dokhan) is the only imperial porphyry quarry in Roman Empire (29–211 CE) producing purple porphyry for Diocletian and Hadrian pillars, sarcophagi and Pantheon.
