Camping - Dry Valleys
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The temperature rises for a few weeks in the summer to melt some of the
glaciers entering the Dry Valleys, freshwater streams feed into lakes at the bottom of the valleys. These lakes are frozen above, but below the ice colonies of bacteria and phytoplankton are supported by temperatures that are warmed by the ice acting as a lens passing through the fleeting summer sunlight.
Photo; © Mike Usher - Pictures from an icebreaker cruise to Eastern Antarctica.