Older evidence of volcanic activity, including lacustrine deposits, indicate temporary disappearance of forests in the area before 6,270BP, likely 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 Chaîne des Puys and to Hasan Dagi, respectively).