#volcano  a mountain formed by volcanic material
  supertype:  mountain__mount  a land mass that projects well above its surroundings; higher than a hill
  instance:  Cameroon  Citlaltepetl  Nevado_de_Colima  Cotacachi  Cotopaxi  Demavend  El_Misti  Mount_Etna  Fuego  Fuji-san  Galeras  Guallatiri  Huainaputina  Klyuchevskaya  Krakatau  Lascar  Mauna_Kea  Mauna_Loa  Purace  Sangay  Tupungatito  Mount_Saint_Helens  Mount_Vesuvius
  part:  volcanic_crater__crater  a bowl-shaped opening at the top of a volcano

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