🇪🇬 Egypt · Hydraulic works
Sadd el-Kafara North Embankment Wadi Garawi
Old Kingdom · 4th Dynasty Egypt (Sneferu to Khufu horizon)
North wing 55 m of world's oldest large dam (Old Kingdom) breached during construction.
🇱🇾 Libya · Rock art
Wadi Mathendous
Early Holocene to Camel Period (Pastoral/Horse/Camel) · Pastoral Saharan / Garamantine / Tuareg
Archetypal Saharan wadi gallery Mathendous with Bubalus-to-Camel engravings of extinct megafauna.
🇾🇪 Yemen · Hydraulic works
Marib Dam
Sabaean Kingdom, Early South Arabian (~1750 BCE – 570 CE) · Sabaean (South Arabian, Kingdom of Saba)
Earthfill diversion dam spanning the Wadi Adhanah and flanked by the limestone North and South Sluices with Sabaean monumental inscriptions.