Badwater

Shannon Farar-Griefer of Hidden Hills, Calif., competes in the 135-mile Badwater Ultramarathon in Death Valley National Park in this file photo taken July 15, 2013. The National Park Service is temporarily discontinuing issuance of running and bicycling event permits in Death Valley National Park until safety evaluations have been completed, according to the park website.  The new policy could affect the running of the annual Badwater Ultramarathon which normally takes place in July.  (REUTERS/Lucy Nicholson)

Shannon Farar-Griefer of Hidden Hills, Calif., competes in the 135-mile Badwater Ultramarathon in Death Valley National Park in this file photo taken July 15, 2013. The National Park Service is temporarily discontinuing issuance of running and bicycling event permits in Death Valley National Park until safety evaluations have been completed, according to the park website. The new policy could affect the running of the annual Badwater Ultramarathon which normally takes place in July. (REUTERS/Lucy Nicholson)