Strabo, Geography

The Sacae, however, made raids like those of Cimmerians and Treres,¹ some into regions close to their own country, others into regions farther away. For instance, they occupied Bactriana, and acquired possession of the best land in Armenia, which they left named after themselves, Sacasene; and they advanced as far as the country of the Cappadocians, particularly those situated close to the Euxine, who are now called the Pontici. But when they were holding a general festival and enjoying their booty, they were attacked by night by the Persian generals who were then in that region and utterly wiped out. And these generals, heaping up a mound of earth over a certain rock in the plain, completed it in the form of a hill, and erected on it a wall, and established the temple of Anaïtis and the gods who share her altar—Omanus and Anadatus, Persian deities; and they instituted an annual sacred festival, the Sacaea, which the inhabitants of Zela (for thus the place is called) continue to celebrate to the present day. It is a small city belonging for the most part to the temple slaves. But Pompey added considerable territory to it, settled the inhabitants thereof within the walls, and made it one of the cities which he organized after his overthrow of Mithridates.