The Paricutin volcano in Mexico is a cinder cone volcano. Most volcanoes are stratovolcanoes . They are more active than shield volcanoes, but not as explosive as the cinder cone or the dome volcanoes. They are built in layers of lava, cinder and ashes. Mount Fuji in Japan is a stratovolcano.
Volcanoes are different sizes and shapes.
Many volcanoes are shaped like cones. Others are long cracks in the earth's crust. Some are very small and very steep. Volcanoes that are very high mountains usually have been formed by earlier eruptions. When the lava cools, it makes the mountain bigger and higher.