Mount St. Helens, a famous volcano, is located in Washington.

Mount St. Helens erupted in 1980, one of the most significant volcanic events in U.S. history. The eruption caused widespread damage, including the destruction of surrounding forests and the creation of a large crater. Today, Mount St. Helens is part of the Mount St. Helens National Volcanic Monument, attracting visitors who want to learn about the eruption and see the resulting landscapes. The area offers opportunities for hiking, volcanic tours, and scientific research, making it a key geological site in the Pacific Northwest.