Big Four Mountain

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Big Four Mountain

Big Four Mountain
Elevation 6,138 ft (1,880 m)
Location Washington State, USA
Range Cascades
Coordinates 48°02′35″N, 121°31′26″W

Big Four is a mountain in the Cascade Range, located 20 miles east of Granite Falls, Washington. The mountain is about 6,135 ft. high and on its north flank, debris piles form from avalanches and are able to remain there year round because of the continuous shade provided by the mountain. During the summer, snowmelt streams flow beneath the debris piles and cause caves to be formed in the ice. The caves vary in size from season to season and are unpredictably dangerous. The large snowfield that forms these caves is probably the lowest snowfield in the lower 48 states, as it lies nowhere close to the region of permanent snow since it's only at 2,000 ft. elevation at its lower end and only over 2,400 ft. at its higher end. This mountain is open to the public via a trail which travels to the largest snowfield, which is off-limits due to a cave-in, killing one and seriously injuring another in 1999.

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One of Big Four's ice caves, ca. 1920.
One of Big Four's ice caves, ca. 1920.

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