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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International Tiger Day
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Banggai cardinalfish with sea anemone
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World Dolphin Day
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Black History Month
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Belize Barrier Reef
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Beautiful baobabs
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International Beaver Day
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Wild garlic in bloom at Hainich National Park, Germany
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Yi Peng Festival in Chiang Mai, Thailand
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All is silent for Big Ben’s musical milestone
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Don’t look down
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When Death Valley blew its top
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Birds of a feather
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Galeries Lafayette, Paris
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Happy Mother’s Day
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Chicagohenge
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Mekong River Delta, Long An, Vietnam
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Reflections on the mighty Amazon
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World Art Day
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Val Gardena, South Tyrol, Dolomites, Italy
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Porto Timoni beach, Greece
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Why you should thank a nurse today
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A garden of prickly delights
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It s Teacher Appreciation Week
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Autumn’s swan song
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Crescent-tail bigeye fish, Great Barrier Reef, Australia
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Languid life on the Lakes
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Glacial spires in the fog
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Dragon dance performed in Chenzhou, Hunan Province, China
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Presidents Day
Bing Wallpaper Gallery

