Scientists attribute this intense cold snap to powerful waves of frigid air originating from the Arctic Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Russia's Far East has been engulfed by its most significant snowfall in six decades, with metres of snow blanketing the