A man in Austria was charged in the death of his girlfriend after leaving her behind, in a case testing ideas of freedom and responsibility in the mountains.The Grossglockner, Austria’s highest mountain, seen from the nearby Sonnblick Observatory.Credit...Kerstin Joensson/Agence France-Presse — Getty Images A distant webcam captured the moments the couple’s hiking trip started to unravel. The pair, a boyfriend and girlfriend, were nearing the summit of Grossglockner, the tallest mountain in the Austrian Alps, when their lights appeared on its dark peak. Around midnight, the man said, his girlfriend was struck by sudden exhaustion and could not continue. He...