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]
(..) Turns out you were right about the whole El Macho thing, huh? Yay! One push of this button, and I send that rocket straight into the same volcano where I faked my death. Only this time, it's for real. No! Yam Tallyho! (..)2013 Despicable Me 2
(..) He died in the most macho way possible. with pounds of dynamite strapped to his chest into the mouth of an active volcano! Yeah, sounds like El Macho's pretty dead. They never found the body. Oh, no. All that was ever retrieved was (..)2013 Despicable Me 2