Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Vourinos -  Vourinos (Greek: Βούρινος) is a mountain range covering the eastern Grevena and southern Kozani regional units in Greece. Its highest elevation is 1866 metres (6122 ft). Its length is approximately 30 km (19 mi) from northwest to southeast. It is drained by the river Aliakmonas and its tributaries. There are forests on the northern slopes and the lower areas the higher elevations are covered with grasslands. The nearest mountain ranges are Askio to the north and Kamvounia to the southeast.
The answer to this question is:
Natural Place