 The name "Sudetes" is derived from "Sudeti montes", a Latinization of the name "Soudeta ore" used in the "Geographia" by the Greco-Roman writer Ptolemy (Book 2, Chapter 10) c. AD 150 for a range of mountains in Germania in the general region of the modern Czech republic.There is no consensus about which mountains he meant, and he could for example have intended the Ore Mountains, joining the modern Sudetes to their west, or even (according to Schütte) the Bohemian Forest (although this is normally considered to be equivalent to Ptolemy's Gabreta forest).The modern Sudetes are probably Ptolemy's Askiburgion mountains.