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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Celestial Spain
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Muniellos Nature Reserve
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It’s World Migratory Bird Day
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Bird s-eye view on World Environment Day
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International Surfing Day
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Digging the birds
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Happy Mothers Day!
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A bite of ancient history
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Noctilucent clouds
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At the gates of the ksar
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The Lena Delta Wildlife Reserve in Siberia, Russia
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Zion National Park Turns 100
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Celebrating a young girl s age-old discovery
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Old Rock Day
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On the wings of the Wright brothers
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Everglades National Park turns 75
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National Park Week: Wind Cave National Park
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Celebrating Helsinki’s birthday at the Kiasma Museum
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Mount Rainier National Park
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Celebrating women in science
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Beaver achievers
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The Hermitage of Santa Justa
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A house of grand scale(s)
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Lavender fields on the Valensole Plateau in Provence, France
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Great Smoky Mountains National Park, Tennessee
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Burns Night
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What happened to these clouds?
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Corjuem Fort in Goa, India
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World Environment Day
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Gateway Arch in St. Louis, Missouri
Bing Wallpaper Gallery

