The Madrean Sky Islands

The Madrean Sky Islands of Arizona, Sonora, Chihuahua, and New Mexico are a set of around 63 high elevation mountains rising out of lowland valleys. They are known for their diversity of life and life zones. This archipelago covers territory around the north and west of the Sierra Madre Occidental and south of the Rocky Mountain province and Colorado Plateau. They also bridge the divide between tropical and temperate climate zones and between the Chihuahuan and Sonoran deserts. See this definitive paper on the Madrean Sky Islands. We have posted a list of Sky Islands with peak elevations and notes. Below you can click on a Sky Island name for more info about that Sky Island, click on an image to see it larger, or click on the related content link to see what content (articles, papers, galleries, etc.) has been posted about each Sky Island.

2,597 meters
Animas Mountains
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2,357 meters
Baboquivari Mountains
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2,974 meters
Chiricahua Mountains
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2,392 meters
Pinal Mountains, Arizona
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3,267 meters
Pinaleño Mountains, Mount Graham
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2,881 meters
Santa Rita Mountains
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2,194 meters
Sierra Aconchi
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2,190 meters
Sierra Chivato
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2,630 meters
Sierra de los Ajos
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1,650 meters
Sierra El Humo looking down north facing canyon
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2,440 meters
Sierra El Tigre
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1,550 meters
Sierra Mazatán
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2,280 meters
Sierra Pinito
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2,520 meters
Sierra San Luis
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1,957 meters
Tumacacori Highlands, Atascosa Mountains
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2,350 meters
Whetstone Mountains
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