The burliest lumberjack with the best-oiled chainsaw couldn"t slice the massive "timbers" found in Petrified Forest National Park in northeastern Arizona. So why are these giant stone logs segmented in such symmetrical rounds, as if they"re ready to be split into firewood?
Petrified Forest National Park
Today in History
More Desktop Wallpapers:
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Panda Day
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Heri es-Swani in Meknes, Morocco
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A wild, craggy corner of the United States
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Winter solstice
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Jerte Valley in bloom
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Wat Sri Sawai in Sukhothai Historical Park, Thailand
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Minnesota State Capitol in St. Paul, Minnesota
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World Whale Day
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Frost on autumn leaves
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Whales in winter
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It s Australia Day
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Big Bend National Park in Texas turns 81
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Celebrating Charles Darwin
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Necropolis of Dargavs
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Looking down on the Otter
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Lionfish off the coast of Indonesia
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Mexican giant cardon cactus
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Butchart Gardens in Brentwood Bay, British Columbia, Canada
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Giving Tuesday
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Here there be dragons
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Celebrating Bike to Work Week, May 14-18
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Gulf Islands National Seashore, Florida
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Borobudur Temple, Java, Indonesia
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Happy birthday, Saguaro National Park
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Flamingos of the Chilean desert
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World Space Week begins
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International Museum Day
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A center of antiquity on the Mediterranean
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Northern gannets, Shetland Islands, Scotland
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Seville, Spain
Bing Wallpaper Gallery

