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Glaciers on Puncak Jaya include the Carstensz Glacier and the Northwall Firn. Since the 1970s, evidence from satellite imagery indicates the Puncak Jaya glaciers have been retreating rapidly. The Meren Glacier melted away sometime between 1994 and 2000. An expedition led by paleoclimatologist Lonnie Thompson in 2010 found that the glaciers are receding at a rate of seven meters per year and will disappear in four to five years.
Image credit: Sémhur