🇯🇴 Jordan · Hydraulic works
Petra Siq Hydraulic Channel
Nabataean Hellenistic–Roman ~100 BCE–106 CE · Nabataean Arab (Hellenistic)
Siq slot-canyon's paired Nabataean canals and flood-tunnel still draining Petra's gorge.
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🇯🇴 Jordan · Hydraulic works
Nabataean Hellenistic–Roman ~100 BCE–106 CE · Nabataean Arab (Hellenistic)
Siq slot-canyon's paired Nabataean canals and flood-tunnel still draining Petra's gorge.
🇪🇸 Spain · Hydraulic works
Roman Flavian Trajanic c.112 CE · Roman (Hispania)
Aqueduct of Segovia – 28.5m double-tier granite ashlar aqueduct (167 arches, 15 km total, 813m bridge) carrying Río Frío to Alcázar without mortar, c.112 CE Flavian-Trajanic. UNESCO 1985.