Mount Saint Helens, Mount St. Helens, Mt. St. Helens

an active volcano in the Cascade Range in southwestern Washington; erupted violently in 1980 after 123 years of inactivity

• volcano — a mountain formed by volcanic material

• Washington, Evergreen State, WA — a state in northwestern United States on the Pacific
• Cascades, Cascade Range — a mountain range in the northwestern United States extending through Washington and Oregon and northern California; a part of the Coast Range