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Mounts Steere (right) and Frakes (left) from the northeast
(U.S. Navy photo) <click to enlarge>
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Mount Steere
11673 ft (3558 m)
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Location: |
Crary Mountains of eastern Marie Byrd Land, Antarctica |
Lat / Long: | 76.7° S, 117.8° W |
Volcanic Type: | Shield volcano with caldera |
Volcanic Status: | Dormant / extinct |
First Ascent: | |
First Ski Descent: | |
Skiable Vertical: | over 6000 ft (1800 m) |
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The Crary Mountains are an isolated massif in eastern Marie Byrd Land consisting of four major shield
volcanoes. The second highest of these (and the fifth highest volcano in Antarctica) is Mount Steere,
which is roughly 8 million years in age. Although a 2 mile (3 km) wide caldera can still be seen at
its summit, a large cirque has been carved into the northeast flank of the mountain, producing a steep
slope which drops directly from the caldera rim for over 5500 vertical feet (1700 m) onto the flats of
the West Antarctic Ice Sheet. Just north of this is a deep subglacial basin, whose floor lies 1.2 miles
(1900 m) below sea level and is filled by ice over 2 miles (3400 m) thick.
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Some useful links:
United States Antarctic Resource Center
USGS Atlas of Antarctic Research (online maps & photos)
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Topographic map of Mounts Steere and Frakes (1:250,000 scale)
from USGS Crary Mountains
<click to enlarge>
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More photos and info about routes, access, etc. may be added in the future ... |
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