Uncover the scientific wonders of Crater Lake: its extraordinary depth, striking clarity, unique water cycle, and hidden ecological marvels.
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America's Deepest Lake Awaits You
This series, The Deep Blue Jewel, explores the geology, history, and hidden stories of Crater Lake National Park.
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No Rivers In, No Rivers Out
Crater Lake has no inlet streams feeding it and no outlet streams draining it.
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Why Crater Lake Is So Blue
Crater Lake's deep indigo color isn't a trick of the sky. In fact, the lake would look just as blue on a completely overcast day. The color comes from the water itself.
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The Old Man Defies Logic Since 1896
A full-sized hemlock log has been bobbing vertically in Crater Lake for well over a century.
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Cold Deep Water Harbors Surprising Life
Crater Lake's floor hosts colonies of aquatic moss growing at depths exceeding four hundred feet, among the deepest freshwater moss colonies ever documented.
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