This Monday Oct. 22, 2012, photo shows a visitor climbing on a canyon wall near the Bright Angel Trail along the South Rim of the Grand Canyon National Park in Arizona. A three-wheel cart gathers images from narrow cobblestone alleys, a push cart allows for virtual tours of museums and a snowmobile captures skiers meandering down the slopes. Now the search giant Google is using a backpack-sized unit to showcase the Grand Canyon’s most popular hiking trail and other off-road sites. (AP Photo/Rick Bowmer)
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