article_snippet: Falling rocks cut off popular resorts Val Thorens, Les Menuires and St Martin and ski enthusiasts were left stranded in a 50-mile tailback.
article_snippet: Rescue workers assess the damage after huge rocks cut off popular ski resorts Val Thorens, Les Menuires and St Martin .
article_snippet: Skiing in Alps was spectacular until now.'
highlights_snippet: Falling rocks cut off ski resorts Val Thorens, Les Menuires and St Martin .
  