The epic expedition sets off down the tropical Tanzanian coast in the wake of the great Scottish explorer.
The explorers continue their journey down the stunning Tanzanian coast in an Arab dhow.
The explorers learn the skills needed to survive in the African bush.
The explorers face a trek of more than 100 miles across the Mbarika mountains.
The leaders pick the three explorers who will trek across the Mbarika mountains.
Three adventurers continue their quest to cross Tanzania's remote Mbarika mountains.