due to forest fires induced by volcanic activity. Petroglyphs dated about 5,000BP also portray volcanic activity, together with even older portrayals of volcanic eruptions in Chauvet Cave (France) and in Çatalhöyük (Turkey) they are among the oldest records of volcanic activity in the world (these other portrayals related to the Bas-Vivarais volcanic field in the Massif Central and to Hasan Dagi, respectively). It is not entirely clear which eruption is depicted by the Porak petroglyphs. References Subduction volcanoes Volcanoes of Armenia Mountains of Armenia Mountains of Azerbaijan Volcanoes of Azerbaijan Pleistocene stratovolcanoes Polygenetic volcanoes Armenia–Azerbaijan border International mountains of Europe International mountains of Asia