an active 'volcano' [=a volcano that could erupt at any time or that is erupting now]
a dormant 'volcano' [=a volcano that is not currently active]
an extinct 'volcano' [=a volcano that does not erupt anymore]
(..) through this crack in the crust creating a chain of young volcanoes. This one, Erta Ale, is today the longest continually erupting volcano on the planet, a lake of lava that has been molten for over a hundred years. These same volcanic forces also created Ethiopia's highlands. million years ago (..)2006 TvShow: Planet Earth Title: Mountains Season: 1 Episode 2