Phenomenon linked to fermenting processes that lead to a production of heat and gas, which, when exposed to oxygen, may become a point of ignition and start a fire. Spontaneous combustion hardly occurs in woods
National Service of Civil Protection, Glossary, State of emergency, Ccs - Aid Coordination Centre, Com - Mixed Operations Centre, Fumarole, Volcanic eruption, Lapilli, Precursory phenomena, , Italy 2012. http://www.protezionecivile.gov.it/jcms/en/view_pd e.wp;jsessionid=9D8024967566483BC206C6859D2994E3?c ontentId=PDE12771, (ND/ Volc Emr - Brit) {149}