Levison and Alberto trek through beautiful landscapes and colonial cities, climb active volcanoes and mountains, navigate deadly highways and meet fishermen and migrants.
Levison experiences breath-taking landscapes, bizarre ruins, and a sufi ceremony and crosses Chechnya - now ruled by a terrifying strongman - into Dagestan, where terrorists hide out in the mountains.
Beginning in Afghanistan, he will push himself to his physical limits as he treks 1,700 miles across the roof of the world, teaming up with local guides and meeting soldiers, monks and nomadic tribes. As well as battling natural obstacles, from punishing terrain to altitudes above 5,000m, Levison has to tread carefully through one of the most fought-over areas of the world.
Joanna begins a 2,000-mile journey across Japan in Hokkaido, where she meets one of the most important animals in Japanese culture, the red-crowned crane. She arrives in Sapporo during the middle of the annual Snow Festival and meets members of the local indigenous community, before travelling into the Fukushima exclusion zone and taking a bullet train from Nagano to Tokyo.
Joanna travels the length of India, including footage of her encounters with the flower-sellers of Madurai, before taking?us back to Uzbekistan, where she reveals some gory tales of the country's history and discovers the secrets of gem-making.
This aerial journey directs its focus on the role the natural world plays in this paradise for curious explorers. The Mediterranean is home to mountain ranges that tower over plains and estuaries, as well as deserts and the sea. Warning: you may want to book your next holiday after viewing this two-part series.