The country that has the most volcanoes is Indonesia. It is part of the Pacific Ring of Fire and is home to over 130 active volcanoes. This high volcanic activity is a result of the movement of tectonic plates in the region, leading to frequent eruptions and the formation of new land. Indonesia's volcanoes, including renowned ones like Mount Merapi and Mount Krakatoa, have significantly shaped its landscapes and ecosystems, but they also pose risks to local populations.