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Khumbu Valley, Nepal
Photo: Gokyo Lake in Khumbu Valley, Nepal
WALLPAPER
Majestic Himalayan peaks surround Gokyo Lake in Nepal's Khumbu Valley. Valleys are scoured and washed out by the conspiring forces of gravity, water, and ice. They all take the form of a U or a V.
Photograph by Jon Arnold Images/Alamy

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