World's Most Dangerous Roads

Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway, where avalanche units operate throughout the year.

Comedians Rhod Gilbert and Greg Davies attempt to drive through the mountainous, landlocked nation of Nepal, starting from the chaotic border with India.

Adventurer Ben Fogle and comedian Hugh Dennis drive a historic route from the Peruvian Andes to the depths of the Amazon. They hope to find the lost city of Constitucion.