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1. Bölüm Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway, where avalanche units operate throughout the year.
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2. Bölüm Comedians Rhod Gilbert and Greg Davies attempt to drive through the mountainous, landlocked nation of Nepal.
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3. Bölüm Ben Fogle and Hugh Dennis travel from the Peruvian Andes to the depths of the Amazon, in search of the lost city of Constitucion.