HERRENHAEUSER, AUSTRIA - AUGUST 08:  (EDITOR'S NOTE: Photo taken with an iPhone 6.) Hikers, family members of the photographer, on day two of a four-day, 50km hike across the Karwendel mountain range walk from Karwendelhaus hut to Falkenhuettte hut on August 8, 2015 near Herrenhaeuser, Austria. The Karwendel mountain range, part of the Austrian Alps, is located in central Tyrol and is a popular summer destination for mountain bikers, climbers and hikers. Mountain huts operated by alpine clubs and scattered across the region offer food and shelter.  (Photo by Sean Gallup/Getty Images)