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Tagsengaruka
1 place carries this tag, across every kind and continent it appears in.
🇹🇿 Tanzania · Earthwork
Iron Age Iraqw / Sonjo (15th–19th c intensive agricultural) · Iraqw / Sonjo (Datoga/Maasai pressure oral)
3,000 ha irrigated stone terrace and furrow system with 500+ compounds and 5 km canals on Rift escarpment – irrigation without state.