In this Oct. 22, 2012 photo, a mule team walks along the Bright Angel Trail on the South Rim of the Grand Canyon National Park in Ariz. Mobile food trucks, revamped lodges and possibly a valet service are coming to the Grand Canyon's South Rim under a new 15-year concessions contract. The park announced Thursday, Sept. 10, 2015, that it has awarded the contract worth about $1 billion over its lifetime to Xanterra South Rim, LLC. (AP Photo/Rick Bowmer, File)
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