The mountain range known for its active volcanoes in the Pacific Ring of Fire is the Andes. Stretching along the western edge of South America, the Andes is the longest continental mountain range in the world, extending across seven countries. It is home to numerous active volcanoes, which are the result of tectonic plate subduction. The volcanic activity is significant not only for geological studies but also impacts local ecosystems and communities. The Andes play a vital role in South America's climate and biodiversity.