Sadd el-Kafara South Embankment — Wadi Garawi Secondary Dam Wing
South wing Kafara · Wadi Garawi south wall
Old Kingdom Early Dynastic–3rd Dynasty (2700 – 2600 BCE)·Egyptian Old Kingdom (Sneferu–Djoser period)·🇪🇬 Cairo Governorate, Wadi Garawi (Wadi al-Garawi), Helwan desert gorge south embankment wing, Egypt
About
About Sadd el-Kafara South Embankment — Wadi Garawi Secondary Dam Wing
Southern wing embankment of the world's oldest masonry dam (Old Kingdom, c.2650–2590 BCE, unfinished, collapsed on first fill) in Wadi Garawi east of the Nile at Helwan, 10 km from the Nile's desert edge. Dam: 14 m high, 113 m long, 58 m base in limestone rubble with 32 m core. South embankment shows stepped downstream face with gypsum mortar distinct from north wing.
Why it mattersSouthern wing preserves construction technique of oldest dam: uncompacted rubble explains failure, a lesson unrepeated for 1000 years
Open questions
Mysteries & theories
Mysteries
- 01Sneferu vs Khufu vs Djoser attribution
- 02South vs north wing phasing difference
Theories
- 01Old Kingdom hydraulic experiment vs quarry road water
- 02Precocious masonry dam before Zarafshan
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.2650 BCE construction start, failed before completion
- Period
- Old Kingdom Early Dynastic–3rd Dynasty (2700 – 2600 BCE)
- Culture
- Egyptian Old Kingdom (Sneferu–Djoser period)
- Purpose
- Wadi flood control for quarries and Nile desert settlement water
- Abandoned
- c.2600 BCE first flood breach after abandonment
- Excavation
- Unexcavated
c.2650 BCE
Dam construction start Early Dynastic
c.2600 BCE
First flood fill washout, never repaired
1885
Schweinfurth rediscovers
On the ground
Structures & features
29.2800° N · 31.3300° E · 185 m · 3 mapped features
South Wing Stepped Face
dam faceStepped downstream limestone facing with gypsum joints
29.2803° N · 31.3303° ECentral Breach Channel
breach30 m wide breach gully where first fill collapsed dam
29.2800° N · 31.3308° EUpstream Clay Core Exposure
coreExposed clay core 32 m wide in central section
29.2798° N · 31.3296° E