Satala

Located in Turkey, the settlement of Satala (Classical Armenian: Սատաղ Satał), according to the ancient geographers, was situated in a valley surrounded by mountains, a little north of the Euphrates, where the road from Trapezus to Samosata crossed the boundary of the Roman Empire, when it was a bishopric, which remains a Latin Catholic titular see. Later it was connected with Nicopolis by two highways. Satala is now Sadak, a village of 500 inhabitants, in the Kelkit district of Gümüşhane Province in Turkey.

This site must have been occupied as early as the annexation of Lesser Armenia under Vespasian. Trajan visited it in 115 and received the homage of the princes of the Caucasus and the Euxine. It was he doubtless who established there the Legio XV Apollinaris and began the construction of the great castra stativa (permanent camp) which it was to occupy till the 5th century. The town must have sprung up around this camp; in the time of Ptolemy it was already important. In 530 the Persians were defeated under its walls. Justinian I constructed more powerful fortifications there, but these did not prevent Satala from being captured in 607-8 by the Persians.

In the Middle Ages and Ottoman period an important east-west route between Erzurum and Sivas or Tokat ran past Satala; however by that time Satala had ceased being an important settlement.

In the Late Roman province of Armenia Prima, Satala was a suffragan of its capital Sebaste's Metropolitan Archbishop.

...
Wikipedia