Is Mount St Helens the only volcano in the US?

Answer 1

No. There are dozens of volcanoes in the U.S. There are active or recently active volcanoes in Hawaii, Alaska, California, Oregon, and Washington. Some of the more nutable U.S. volcanoes include:

• Kilauea in Hawaii, which has been reupting continously since 1983
• Mauna Loa in Hawaii, the world's largest volcanic mountain
• Novarupta in Alaska, which produced the largest eruption of the 20th century
• Mount Cleveland in Alaska, oneof the most active in the U.S.
• Mount Rainier in Washington, the tallest peak in the state.

Answer 2

No, Mount St. Helens is not the only volcano in the US. There are many other volcanoes in the US, including notable ones like Mount Rainier, Mount Shasta, and Yellowstone Caldera.