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On the Rocks 

Glacier National Park’s Grinnell Glacier has retreated steadily for more than a century. The glacier’s surface area was 2.33 sq. km in 1850 and 0.88 sq. km in 1993, the date of the last precise survey. It has already lost about 90 percent of its volume since 1910, and experts expect considerable destruction of the glacier in the next 10 years.

Image credit: photos courtesy of the Extreme Ice Survey

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Uploaded: Feb 18, 2010
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Image Archives: Stories: the Extreme Ice Survey

  • On the Rocks
  • James Balog installs “Cliff,” a glacier-watching camera, alongside...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • The surface area of Glacier National Park’s Sperry...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Icebergs 200 feet tall, formerly part of the...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Glacier National Park’s Grinnell Glacier has retreated steadily...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010
  • On the Rocks
  • Alaska’s Columbia Glacier, pictured here in 2006, has...
  • photos courtesy of the Extreme Ice Survey
  • Feb 18, 2010

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