関連ワード:  when was mount fuji last active    when was mount fuji last eruption    when was mount fuji recent eruption    when was mount fuji biggest eruption    when was mount fuji's last major eruption    when was mount fuji active    when did mount fuji last eruption exact date    when was the last time mount fuji was active    is mount fuji active or dormant    when did mount fuji last erupt