LAS VEGAS, NV - MAY 19: Prickly cactus at the Red Rock Canyon National Conservation Area, overseen by the Bureau of Land Management, is viewed on May 19, 2015 near Las Vegas, Nevada. Located 17 miles west of the Las Vegas Strip, this unique desert land, encompassing nearly 200,000 acres and offering biking, hiking and spectacular photographic opportunities, is an easy side trip for millions of tourists each year. (Photo by George Rose/Getty Images)
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