British man and 12-year-old son found dead in Alps Patrice Ribes, of the high mountain police in Chamonix, confirmed the deaths, and that they appeared to have been caused by a "fall of several hundred meters." He said the father and son had been exploring a "dangerous, deep, snowy" mountain trail between Bossons and Les Houches, close to Mont Blanc. French police were liaising with Interpol and British authorities to establish their identities, he said. A Foreign Office spokesman said: "We are urgently looking into reports that two British nationals have been found dead in the French Alps." Richard Mansfield, a mountain guide who has worked in the area for 20 years and lives 1km from the Bossons glacier, said: "I don't know exactly where the accident happened but all the trails on the north side of the valley are covered in snow at the moment. The footpaths usually don't get that many people out at this time of year because they are much more difficult to navigate, although yesterday was a beautiful sunny day. Mr Mansfield described a "number of footpaths which weave in and out of indentures in the mountainside" and this "is where they may have slipped off." The valley, which boasts five ski resorts, receives many British tourists throughout the year, with many owning holiday homes in the area.