volcanic mountain definition
Confidence votes 242K. Passionate about all things Australian. A volcanic mountain is a mountain formed by volcanic action. It is usually cone-shaped with a depression on top, which is where the crater is, or was, in the case of extinct volcanoes.assionate about all things Australian. A volcanic mountain is a mountain formed by volcanic action. It is usually cone-shaped with a depression on top, which is where the crater is, or was, in the case of extinct volcanoes.