Uskaf

Uskāf Banī Junayd,[1] also Iskāf,[2] was an ancient and medieval city of Iraq, located on the Nahrawan Canal at the present site of Sumāka.

[1] Although not mentioned by name in contemporary accounts, Uskaf was a significant urban center during the Sasanian period.

[6] Uskaf was the largest city in the Diyala basin both in the Sasanian and early Islamic periods.

[3] During this time, the city became known as "Bani Junayd" after a powerful local family known for its hospitality.

[7] The final construction at Uskaf dates from the late 11th century, and the site appears to have been abandoned shortly thereafter.