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With an officially recognized [b] summit elevation of 14,410 ft (4,392 m) at the Columbia Crest, [1] [12] it is the highest mountain in the U.S. state of Washington, the most topographically prominent mountain in the contiguous United States, [2] and the tallest in the Cascade Volcanic Arc.
A visitor center run by the Washington State Parks is in Silver Lake, Washington, about 30 miles (48 km) west of Mount St. Helens. [100] Exhibits include a large model of the volcano, a seismograph, a theater program, and an outdoor natural trail.
Mount Rainier National Park is a national park of the United States located in southeast Pierce County and northeast Lewis County in Washington state. [3] The park was established on March 2, 1899, as the fourth national park in the United States, preserving 236,381 acres (369.3 sq mi; 956.6 km 2) [1] including all of Mount Rainier, a 14,410-foot (4,390 m) stratovolcano.
Name Elevation Location Last eruption meters feet Coordinates; Malumalu: Last 8,000 years Ta‘u-931: 3054: 30,000 years ago [15]: Ofu-Olosega: 639: 2096: 1866 unnamed submarine cone eruption
Over 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption.
The day before its 1980 eruption, Mount St. Helens was the fifth highest major summit of Washington. Today, Mount St. Helens is the 35th highest major summit of the state. This article comprises three sortable tables of major mountain peaks [1] of the U.S. State of Washington. The summit of a mountain or hill may be measured in three principal ...
Washington has a majority of the very highest volcanoes, with 4 of the top 6 overall, although Oregon does hold a majority of the next highest peaks. Even though Mount Rainier is the tallest, Mount Shasta in California is the largest by volume, followed by Washington's Mount Adams. Below is a list of the highest Cascade volcanoes:
The largest flank volcano is a basaltic shield volcano on Adams east base called Goat Butte. This structure is at least 150,000 years old. This structure is at least 150,000 years old. Little Mount Adams is a symmetrical cinder cone on top of the Ridge of Wonders on Adams' southeast flank.