Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway, where avalanche units operate throughout the year. Show more
Discover 11,128,835 listings and 279,643 playable programmes from the BBC
Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway, where avalanche units operate throughout the year. Show more