Mysteria
Verified34.5200° N · 38.1200° E · 620 m

Qasr Al-Hayr Al-Gharbi Canal (Hir Azraq Canal to Palmyra Steppe Palace)

قصر الحير الغربي · Hayr Gharbi Canal · Palmyra Hayr Canal

Umayyad (Hisham ibn Abd al-Malik)·Umayyad steppe palace culture·🇸🇾 Homs Governorate, Palmyrene Steppe, Qasr al-Hayr al-Gharbi, Syria

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About

About Qasr Al-Hayr Al-Gharbi Canal (Hir Azraq Canal to Palmyra Steppe Palace)

Umayyad palace canal 16 km to Qasr al-Hayr al-Gharbi (620 m) in Palmyrene Syrian steppe, built 727 CE by Caliph Hisham ibn Abd al-Malik as hunting lodge and oasis estate. Gravity canal 16 km from Harbaka Dam reservoir (Harbqah) with 0.4 m×0.6 m cut limestone channel, underground gallery 2.1 km crossing divide, and elevated aqueduct 3.2 m high over wadi. Feeds palace double-basin cistern 42 m×28 m and 6 ha orchard. Canal surveyed by Schlumberger 1890s; channel plastered with Roman-style opus signinum. Contrasts with Hayr Sharqi 70 km NE qanat.

Why it mattersBenchmark Umayyad steppe hydraulic linking Roman Harbaka Dam to Islamic palace oasis.

Open questions

Mysteries & theories

Mysteries

  1. 01Harbaka Dam Roman vs Umayyad reuse—dam pre-existence

Theories

  1. 01Roman dam repurposed by Umayyad

Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.

History

How it came to be

Built
727 CE
Period
Umayyad (Hisham ibn Abd al-Malik)
Culture
Umayyad steppe palace culture
Builders
Umayyad engineers (Caliph Hisham)
Purpose
Palace orchard and cistern water from Harbaka Dam reservoir to hunting lodge oasis
Abandoned
c.750 CE (Abbasid neglect)
Rediscovered
1890s Schlumberger survey; 1936 Poidebard aerial; 1990s IFPO excavation
Excavation
Partially excavated

  1. 727 CE

    Hisham builds Qasr Hayr Gharbi palace and 16-km canal

  2. 1936 CE

    Poidebard aerial photographs canal trace

On the ground

Structures & features

34.5200° N · 38.1200° E · 620 m · 2 mapped features

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