火か山ざんフロント

noun

volcanic front

A geological term referring to the boundary or zone where volcanic activity is concentrated, often associated with subduction zones.

• 日本にほん列れっ島とうは火か山ざんフロントに沿そって多おおくの活かっ火か山ざんが分ぶん布ぷしている。

  Many active volcanoes are distributed along the volcanic front in the Japanese archipelago.