🇾🇪 Yemen · Hydraulic works
Sadd Ba'ta — Wadi Rada Gravity Dam (Yemeni Highlands)
Himyarite (400–580 CE) · Himyarite
Himyarite gravity dam (11 m high, 140 m crest) in Wadi Rada at Ba'ta (1,680 m) with downstream stepped spillway (7 steps, 1.2 m tread) and 1.6 km contour canal feeding Rada basin terraces.