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Lassen Volcanic National Park Cliff Lake
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Lassen Volcanic National Park
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reddish color microscopic snow alage

Did You Know?
The reddish color sometimes observed on top of snow at Lassen Volcanic NP snow is a living organism called snow algae. When snow begins to thaw, these microscopic organisms spring to life. They function as a primary food source and are being studied for their cancer-fighting properties.
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Last Updated: March 06, 2008 at 16:58 MST