Nature
Boulder Glacier lies on the southeast slope of Mount Baker in Washington’s Cascade Range and is the volcano’s sixth-largest glacier, descending from the summit crater between Grant Peak and Sherman Peak to about 5,000 feet. Its modern history reflects Mount Baker’s changing ice: it retreated about 8,700 feet from 1850 to 1950, advanced from 1953 to 1979 during a cooler, wetter period, then retreated again from 1987 to 2008, exposing rock and soil. The glacier’s recession has reshaped nearby terrain, while Boulder Ridge preserves older glacial features. It is also a popular Mount Baker climbing route, first used for an ascent in 1891.
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Washington · United States
