To be considered active, a volcano must have erupted at some point during the Holocene, but dormant and extinct are a little harder to define.

The Taftan volcano in Iran frequently expels gas, but has not erupted. A volcano that has been dormant for hundreds of thousands of years could be gearing up for a massive explosion, according to new ...

Several hundred volcanoes lie dormant beneath the Eifel in western Germany. They are typical examples of what is known as ...

Several hundred volcanoes lie dormant beneath the Eifel in western Germany. They are typical examples of what is known as distributed volcanic fields ...