Honshu Volcano is a group of three active volcanoes located in Japan. The first volcano is Mount Fuji, which is the highest mountain in Japan and is an active stratovolcano. The second volcano is Mount Asama, which is an active complex volcano located on the border of Nagano and Gunma prefectures. The third volcano is Mount Osamu, which is an active stratovolcano located in the Chūbu region of Honshu. All three volcanoes are part of the Ring of Fire, a chain of volcanoes and seismic activity that encircles the Pacific Ocean.