🇾🇪 Yemen · Hydraulic works
Subeihi Dam
Sabaean Kingdom 800 BCE - 570 CE · Sabaean (Saba) kingdom
800 BCE Sabaean gorge regulator dam (90 m) 2.8 km upstream of Marib, desilting weir for oasis triad.
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🇾🇪 Yemen · Hydraulic works
Sabaean Kingdom 800 BCE - 570 CE · Sabaean (Saba) kingdom
800 BCE Sabaean gorge regulator dam (90 m) 2.8 km upstream of Marib, desilting weir for oasis triad.
🇵🇪 Peru · Geoglyph
Early Intermediate (Nazca 5–7, 200 BCE–600 CE) · Lucanas Nazca–Huarpa canyon groups
24 western gorge-head figures at Jaccra 3650 m: arms-aloft giants + spiral and 110 m gorge-arrow to springs.
🇸🇴 Somaliland · Rock art
Neolithic pastoral to Recent (2500 BCE–1000 CE) · Pastoral Cushitic → Somali
Gorge system of 10 shelters with Somaliland's most naturalistic pastoral bovines, giraffes and elongated humans.
🇩🇿 Algeria · Ancient city
Numidian to Ottoman (3rd c. BCE–present; Roman peak 1st–4th c. CE) · Numidian / Carthaginian / Roman / Byzantine / Islamic
Cirta (modern Constantine, Qusanṭīnah) is the Tunisian Tell's most dramatic city, perched on a limestone mesa girded by the 300-m-deep Rhumel gorge with four bridges.