Joshua Tree National Park. Keys View. San Andreas Fault. cover photo - 64419425

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Joshua Tree National Park is immense, nearly 800,000 acres, and infinitely variable. It can seem unwelcoming, even brutal during the heat of summer when, in fact, it is delicate and extremely fragile. This is a land shaped by strong winds, sudden torrents of rain, and climatic extremes. Rainfall is sparse and unpredictable. Streambeds are usually dry and waterholes are few. Two deserts, two large ecosystems primarily determined by elevation, come together in the park. Few areas more vividly illustrate the contrast between â€œhighâ€ and â€œlowâ€ desert. Below 3,000 feet (910 m), the Colorado Desert (part of the Sonoran Desert), occupying the eastern half of the park, is dominated by the abundant creosote bush. The higher, slightly cooler, and wetter Mojave Desert is the special habitat of the undisciplined Joshua tree, extensive stands of which occur throughout the western half of the park. Joshua Tree is crisscrossed with hundreds of faults, and is a great place to see raw rocks and the effects of earthquakes. The famous San Andreas Fault bounds the south side of the park and can be observed from Keys View.

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