Tourists hike at the Rao Jodhpur desert rock park in Jodhpur, India'a Rajasthan, on Oct. 21, 2013. Rao Jodhpur desert rock park was created in 2006 to try and restore the natural ecology of large, rocky wasteland next to Mehrangarh Rort in India. It had suffered years of neglect and was overrun by baavia (Prosopis juliflora), an invastive, thorny shrub introduced from Central America almost a century ago. (Xinhua/Chen Xuelian)

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