Three Sisters (Oregon)
Sat, 2018-Jan-06 00:02 UTC
Length - 2:22
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The featured article for Saturday, 6 January 2018 is Three Sisters (Oregon).
The Three Sisters are volcanic peaks that form a complex volcano in the U.S. state of Oregon. They are part of the Cascade Volcanic Arc, a segment of the Cascade Range in western North America extending from southern British Columbia through Washington and Oregon to Northern California. Each more than 10,000 feet (3,000 m) in elevation, they are the third-, fourth-, and fifth-highest peaks in Oregon. Located in the Three Sisters Wilderness at the boundary of Lane and Deschutes counties and the Willamette and Deschutes national forests, they are about 10 miles (16 km) south of the nearest town, Sisters. Diverse species of flora and fauna inhabit the area, which is subject to frequent snowfall, occasional rain, and extreme temperature variation between seasons. The mountains, particularly South Sister, are popular destinations for climbing and scrambling.
Although they are often grouped together as one unit, the three mountains have their own individual geology and eruptive history. Neither North Sister nor Middle Sister has erupted in the last 14,000 years. South Sister last erupted about 2,000 years ago and might erupt in the future, threatening life within the region. After satellite imagery detected tectonic uplift near South Sister in 2000, the United States Geological Survey improved monitoring in the immediate area.
This recording reflects the Wikipedia text as of 00:02 UTC on Saturday, 6 January 2018.
For the full current version of the article, go to http://en.wikipedia.org/wiki/Three_Sisters_(Oregon).
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