Mesarfelta

It was also a bishopric that is included in the Catholic Church's list of titular sees.

[1] The historic Mesarfelta is believed to be what are now the ruins of El-Outaïa or those of Tolga, Henchir-El-Ksar,[1] or may be Qastilya in Algeria[2] (according to "Three North-African Topographical Notes (Islamic-Roman)").

The city is believed to have been constructed as a fortification by the Romans (with annexed "vicus"), in the second half of the first century near the Aures Mountains.

[3] A barrier called Fossatum Africae, which marked the frontier between the territory of the Roman Empire and other lands, ran through Mesarfelta.

[4] The city disappeared after the Muslim conquest in the second half of the 7th century.