jake shaw was just beginning his gap year - volunteering as a climbing instructor at kandersteg international scout centre - when the tragedy occurred last year .
the 21-year-old had fallen 25ft -lrb- 8m -rrb- from the upper floor of the building in the early hours of august 1 .
he was airlifted to hospital in bern suffering severe injuries but died nine days later .
today lincolnshire central assistant coroner paul smith , concluded that jake 's death was an accident .