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Gadara Aqueduct : ウィキペディア英語版 | Gadara Aqueduct The Gadara Aqueduct was a Roman aqueduct to supply water to the city of Gadara, modern-day Jordan, and the longest known tunnel of antiquity.〔Mathias Döring: ("Wasser für Gadara. 94 km langer Tunnel antiker Tunnel im Norden Jordaniens entdeckt" ), in: ''Querschnitt'', Vol. 21 (2007), pp. 24–35〕 The 170-km (105.6-mi) long pipeline was constructed in the qanat technology, that is as a series of well-like vertical shafts, which were connected underground from opposite sides by gently sloping tunnels. The longest section featured a length of 94 km (58.4 mi).〔 Partly following the course of an older Hellenistic aqueduct, excavation work arguably started after a visit of emperor Hadrian in 129-130 AD. The Gadara Aqueduct was never quite finished, and was put in service only in sections. It was discovered and explored as late as 2004. __NOTOC__ == Notes ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Gadara Aqueduct」の詳細全文を読む
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