Ἀγαρία

From LSJ

ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers

Source

Spanish (DGE)

-ας, ἡ Agaria región de Sarmacia, Dsc.3.1.2.