Though it"s December, it isn"t cold and snowy everywhere in North America. Here, near Tucson, Arizona, the Sonoran Desert stays warm year-round. In this photo, we"re looking at a "sky island"—an isolated, high-elevation woodland surrounded by radically different lowland environments. In this case, the desert land at the base of the mountain is peppered with saguaros—a stately cactus recognized for its long arms. The snow-capped Santa Catalina Mountains in the distance are part of the Madrean Sky Islands and are home to Mount Lemmon Ski Valley, which is the southernmost ski destination in the US. The ski area covers the slopes of Mount Lemmon, which reaches an elevation of about 9,100 feet at the summit and can receive around 180 inches of snow annually.
Sky island views
Today in History
More Desktop Wallpapers:
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National Lighthouse Day
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Merry Christmas
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Henningsvær Stadion, Norway
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International Museum Day
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Cue up the tango music
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Christmas comes to New York City
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Castle Frankenstein in Darmstadt, Germany
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Swimming into the season
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Endangered Species Act
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Ocean City, Maryland, at sunrise
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Ring-tailed lemur
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It s National Camera Day. Get the picture?
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Crescent-tail bigeye fish, Great Barrier Reef, Australia
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Death Valley National Parks Anniversary
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Let s get lost
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Gentoo penguins in Antarctica
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Classical music takes center stage
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We re gonna need a bigger birdhouse
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A towering view of the Pale Mountains
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Happy Independence Day!
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Collared aracari in Costa Rica
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Squirrel Appreciation Day
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Fighting evil with costumes
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Anniversary of National Park Service
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World Environment Day
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Martin Luther King Day
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Plains zebra foal in Etosha National Park, Namibia
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A Portuguese fort takes a star turn
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Winnie-the-Pooh Day
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A rest stop for the birds
Bing Wallpaper Gallery

