Gadara Aqueduct

In this special case, nearly all the shafts were diagonal at 45–60 degrees, with stairs to the real water channel inside the mountain.

The aqueduct starts at a Roman dam in Dilli (al-Dali, also spelled el-Dilli, Eldili, ad-Dili, c. 7 km north of the sub-district residence town of Al-Shaykh Maskin, Izra District, Daraa Governorate, Syria).

During the last few decades, more than three kilometres (2 mi) of the remaining substructions were demolished on the plains between Dilli and Dera'a near the Syria-Jordan border.

The remains of the bridge now can be found on the ground of the new Al Saad Dam located at the eastern suburbs of Dera'a.

After a junction point with a side channel from the Muzayrib lake, the underground aqueduct begins.