Volcanoes Around The World: ·Mount St. Helens in Washington has been active for 400 years and erupted very violently in the 1980's and a couple of eruptions in 2004 and the center of the moutain is still growing. ·Volcanoes in Hawaii are lava volcanoes and dont have as explosive eruptions as the ones in the northwest. ·The "Ring of Fire" Has the most volcanoes in the world and they're the most active.