🇾🇪 Yemen · Hydraulic works
Marib Dam East Wadi Dhana Barrage
Sabaean to Himyarite · Kingdom of Saba (Sabaean South Arabian) then Himyar
480-m east rockfill barrage of Great Marib Dam at Balaq Hills gap.
🇲🇽 Mexico · Ancient city
San José Mogote
Early–Middle Formative 1500–500 BCE (Rosario phase) · Zapotec (Mogote phase)
Earliest Zapotec urban precursor with Monument 3 captive blood glyph, earliest Oaxacan writing 600 BCE.