The otherworldly rock formations in the Bisti/De-Na-Zin Wilderness inspired some creative names—such as the "Alien Egg Hatchery" seen in this photo. More than 70 million years ago, this desert was a tidal swamp along the shore of the long-evaporated Western Interior Seaway that once bisected North America. A diverse array of sediment and rock was deposited by the waters, and after the seaway retreated, the rocks remained.
Welcome to the Alien Egg Hatchery
Today in History
More Desktop Wallpapers:
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Grand Teton National Park, Wyoming
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Stuben am Arlberg, Austria
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Design for Each and All
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International Rock Day
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World Population Day
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Snow aglow in central Japan
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Tennis in the park
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Protecting Alaska
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The Big Blue of the Sierra
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Siblings Day
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St. Patricks Day
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Procida, Italy
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Happy 800th, Salisbury Cathedral
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Cloughoughter Castle, County Cavan, Ireland
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Walking among the giants
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Gazing upon Portraits of Change
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A magnificent monolith
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European Day of Parks
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Sundance Film Festival opens in Park City
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Great Sand Dunes National Park and Preserve
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World Giraffe Day
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Welcome to the Alien Egg Hatchery
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Celebrating whales—and a whale of a tale
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World Teachers Day
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1.1 billion opportunities for a better world
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Carnival comes to Olinda
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It’s showtime for a precious crop
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Art abounds at the Palais Garnier
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Reflections of the night sky
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Farmers Day