Mason County topographic map

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Stevens Pass (elevation 4,061 ft (1,238 m)) is a mountain pass through the Cascade Mountains located at the border of King County and Chelan County in Washington, United States. U.S. Route 2 travels over the pass, reaching a maximum elevation of 4,061 feet (1,238 m). The Pacific Crest Trail crosses the highway…

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The Mount St. Helens major eruption of May 18, 1980 remains the deadliest and most economically destructive volcanic event in U.S. history. Fifty-seven people were killed; 200 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. A massive debris avalanche,…

Average elevation: 2,096 m

Mount Rainier (/reɪˈnɪər/), indigenously known as Tahoma, Tacoma, Tacobet, or təqʷubəʔ, is a large active stratovolcano in the Cascade Range of the Pacific Northwest, located in Mount Rainier National Park about 59 miles (95 km) south-southeast of Seattle. With a summit elevation of 14,411 ft (4,392…

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Goat Peak is a 7,001-foot (2,134 m) peak in the North Cascades of Washington, United States. The summit offers broad views of the Methow River valley, as well as many of the other prominent cascade peaks including glaciated Silver Star Mountain. A working US Forest Service fire lookout is located on the…

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Mica Peak is the name of two separate mountain summits in the United States located approximately 5.49 miles (9 km) apart; one in Spokane County, Washington and the other in Kootenai County, Idaho. The two peaks are located along the same ridge, which separates the Spokane Valley and Rathdrum Prairie from the…

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Mount Ellinor is a peak in the Olympic Mountains of Washington, United States. It is located in an area designated as the Mount Skokomish Wilderness. The mountain is a popular day hike in the summer months; the summit is reachable via a steep-but-brief 3.3-mile (5.3 km) trail which gains about 3,200 feet (980…

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Adams is one of the long-lived volcanoes in the Cascade Range, with minor activity beginning 900,000 years ago and major cone building activity beginning 520,000 years ago. The whole mountain has been completely eroded by glaciers to an elevation of 8,200 feet (2,500 m) twice during its lifetime. The current…

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The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks and ridges, deep glacial valleys, and granite spires. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to various climate…

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Lake River, a "slow, flat slough of the Columbia River", loses only 1 foot (30 cm) in elevation over its entire 11-mile (18 km) course. It flows north, roughly parallel to the Columbia until curving slightly northwest to join it. At times, tidal fluctuations and high flows along the Columbia cause Lake River…

Average elevation: 35 m

Average elevation: 909 m