Sadd el-Kafara
A masonry dam about 113 m long and 14 m high across a desert wadi near Helwan, among the oldest known. A flood destroyed it before it was finished.
Dated events and their evidence
- 2,600 BCE disputed
built about 2700 to 2600 BCE and never finished source
Where
29.7955° N, 31.4320° E
On the surviving abutments in the Wadi Garawi.
Sources
- https://en.wikipedia.org/wiki/Sadd_el-Kafara
- https://hydriaproject.info/en/case-studies/sadd-al-kafara-the-oldest-dam-in-the-world/waterworks
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.