Vaulted Basalt Ridge Tunnel (12 m)
A structure at Ayn Zubaydah West Branch Aqueduct (Makkah West Zubaydah Canal) · 🇸🇦 Saudi Arabia
The structure
About Vaulted Basalt Ridge Tunnel (12 m)
12-m vaulted tunnel preserving 0.6‰ grade over basalt ridge — Mu'tasim 842