C Crystals2 New member Sep 30, 2011 #3 All three have vents. The vent is the opening from which the volcanic material is ejected. However, in northern Arizona, many cinder cones are labelled simply Vent 131, Vent 280, etc.
All three have vents. The vent is the opening from which the volcanic material is ejected. However, in northern Arizona, many cinder cones are labelled simply Vent 131, Vent 280, etc.