Editing Volcano (section)

===Volcanic-alert level===
The three common popular classifications of volcanoes can be subjective and some volcanoes thought to have been extinct have erupted again. To help prevent people from falsely believing they are not at risk when living on or near a volcano, countries have adopted new classifications to describe the various levels and stages of volcanic activity.<ref>{{cite web|url=http://www.volcanolive.com/alerts.html|title=Volcanic Alert Levels of Various Countries|publisher=Volcanolive.com|access-date=August 22, 2011}}</ref> Some alert systems use different numbers or colours to designate the different stages. Other systems use colours and words. Some systems use a combination of both.