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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.
🇾🇪 Yemen · Hydraulic works
Sabaean to Himyarite (8th c BCE–6th c CE) · Sabaean / Himyarite
North sluice of Great Dam of Ma'rib (750 BCE–575 CE) — 23-m cut-stone control feeding northern oasis.
🇾🇪 Yemen · Hydraulic works
Sabaean to Himyarite (7th c BCE–6th c CE) · Sabaean / Himyarite
South sluice of Great Dam of Ma'rib (7th c BCE–575 CE) — 18-m limestone control for the grand southern oasis.