関連ワード:  is mt mayon an active volcano    is mt.mayon the most active volcano    mount mayon is an active volcano found in indonesia    is mt mayon a dormant volcano    why is mt mayon classified as an active volcano in the philippines    mount mayon is an active volcano in the province of albay    is mount mayon an active volcano    what type of volcano is mt. mayon  
結果 : is mt mayon an active volcano