The Xerias ( Greek: Ξερίας, from ξερός, "dry") is a river of northern Euboea, Greece. Anciently, it was known as the Callas or Kallas ( Ancient Greek: Κάλλας) which flowed into the sea near Oreus. [1] [2] The Kremasi Waterfall is on this river near the village of Milies.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Callas". Dictionary of Greek and Roman Geography. London: John Murray.