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The snowboarder Samuel Camenzind is jumping over a river of melting glacier ice on the surface of Theodul glacier above the station Trockener Steg on Thursday, August 2, 2018, in Zermatt, Valais, Switzerland. This spot is located at an altitude of around 3100 meters. Due to the heat wave, rivers of melting ice are flowing over the surface of the glacier. The air temperature was today on this altitude 8 degrees celsius. (KEYSTONE/Dominic Steinmann)