Sean Fletcher is in the snowy Cairngorms to mark the centenary of the death of the great explorer Ernest Shackleton.

After the indulgences of the festive season, one way to blow away the cobwebs is getting outside for a winter walk. Charlotte heads out on one of Britain's most famous trails, the South West Coast Path, to get a breath of fresh air and discover the power of walking. She meets inspiring people taking to the footpath for their health and wellbeing, looks out for wildlife from the clifftops, and joins an artist for whom this coastline is his muse. Along the way, we explore the Countryfile archives for adventures of winters past.