Prosecutors charged Thomas Plammerger with manslaughter by gross negligence after Kerstin Gurtner froze to death during a late-winter ascent on the Großglockner, and Plammerger faces up to three years in prison.A separate avalanche on the Zugspitze killed a 19-year-old climber on the Stopselzieher via ferrata despite quick response by helicopters and search dogs, and Plammerger denies the charges with his lawyer Kurt Jelinek telling BILD that Plammerger had expressed regret.