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Mount Sanford

Mount Sanford is a shield volcano in the Wrangell Volcanic Field, in eastern Alaskamarker near the Copper River. It is the third highest volcano in the United Statesmarker behind Mount Bonamarker and Mount Blackburnmarker. The south face of the volcano, at the head of the Sanford Glacier, rises in resulting in one of the steepest gradients in North America.


Mount Sanford is mainly composed of andesite, and is an ancient peak, being mostly Pleistocene, although some of the upper parts of the mountain may be Holocene. The mountain first began developing 900,000 years ago, when it began growing on top of three smaller shield volcanoes that had coalesced. Two notable events in the mountain's history include a large lava flow which traveled some to the north east of the peak, and another flow which erupted from a rift zone on the flank of the volcano some 320,000 years ago. The second flow was basaltic in nature and marks the most recent activity of the volcano. The flow was dated using radiometric methods.


The mountain was named in 1885 by Lieutenant Henry T. Allen of the U.S. Army after the Sanford family (Allen was a descendant of Reuben Sanford).

Mount Sanford was first climbed on July 21, 1938 by noted mountaineers Terris Moore and Bradford Washburn, via the still standard North Ramp route up the Sheep Glacier. This route "offers little technical difficulty" and "is a glacier hike all the way to the summit" but is still a serious mountaineering challenge (Alaska Grade 2) due to the altitude and latitude of the peak. The base of the route is usually accessed by air, but landing near the mountain is not straightforward.

On March 12, 1948, Northwest Airlines Flight 4422 crashed into Mount Sanford. All 24 passengers and 6 crew members were killed. The wreckage was quickly covered by snow and was not found again until 1999.

The first solo ascent of Sanford was achieved on September 19, 1968, by Japanese mountaineer Naomi Uemura, who later died just after making the first solo winter ascent of Mount McKinleymarker.

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