Are you ready to make some noise? It"s International Rock Day! Wait, not that sort of rock. On this day, we"re all about granite, limestone and slate. There are three types of rock: igneous are formed from solidified magma and lava; sedimentary rocks are layers of sedimentary particles such as sand; and metamorphic rocks are the result of heat and pressure on other kinds of rock.
International Rock Day
Today in History
More Desktop Wallpapers:
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Tomb of the Golden Pharaoh
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Giant cuttlefish, Whyalla, South Australia, Australia
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Saguaro cacti, Ironwood Forest National Monument, Arizona
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Where buffalo roam
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A bridge that holds up history
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Keel-billed toucan, Costa Rica
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Eastbourne Pier, East Sussex, England
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Gwalior Fort, Madhya Pradesh, India
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A young bull moose, Denali National Park, Alaska, United States
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Devils Tower National Monument, Wyoming, United States
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Star Wars Day
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A street filled with sakura trees
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Happy Lunar New Year!
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International Rock Day
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Pegadung Rock, Lampung, Sumatra, Indonesia
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Postcard from the Canadian Rockies
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International Mountain Day
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Volcán Alcedo giant tortoise, Isabela Island
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Mount Hood, Oregon
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Its puffling season!
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Have a merry little Christmas
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A light in the coastal darkness
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Red deer stag in Glen Affric, Scotland
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Her legend and mystery endure
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Brown-throated three-toed sloth
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Salt evaporation ponds on the island of Gozo, Malta
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Great Smoky Mountains National Park, Tennessee, USA
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The Painted Hills, Oregon
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Chittorgarh Fort, Rajasthan, India
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Oxbow Bend on the Snake River, Grand Teton National Park, Wyoming, United States
Bing Wallpaper Gallery

