Mount Fuji is a classic cinder cone, built up by a stratovolcano. The mountain is notable for its symmetrical cone-shaped profile, which is characteristic of stratovolcanoes that have not erupted laterally. Oregon State University notes that Mount Fuji has erupted over 16 times.
Mount Fuji, like other stratovolcanoes, produces mainly ash and cinders, which pile up at its base and can rise at a steep angle. A stratovolcano is easily distinguished from other types of volcanoes by its tall, conical shape. Volcanoes that produce mainly viscid lava, which flows slowly over the surrounding terrain, feature lower and broader profiles. These are called shield volcanoes due to their characteristic shape.