65 British climbers feared missing as death toll in Nepal reaches 2,500 . Survivors on Everest recall 'tsunami ' of snow and ice triggered by quake . Climbers left stranded by the tonnes of debris and ice blocking their routes . In Kathmandu and Keith Diplock , 71 buildings were reduced to matchsticks .
65 British climbers feared missing as death toll in Nepal reaches 2,500 . Survivors on Everest recall 'tsunami ' of snow and ice triggered by quake . Climbers left stranded by the tonnes of debris and ice blocking their routes . In Kathmandu and Pokhara buildings were reduced to matchsticks .