Kajmakčalan (Kaimakchalan) or Kaimaki or Kaimaktsalan or Voras (Greek: Καϊμακτσαλάν or Καϊμάκι or Βόρας, Macedonian: Каjмакчалан, Kajmakčalan) is a mountain on the border between Greece and the Republic of Macedonia. It is the southernmost and highest peak, 2,524 metres (8,281 ft), of a range known in Greek as the Voras Mountains and in Macedonian as Nidže. The frontier between the two countries runs across the summit.