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.

Ben Fogle and Hugh Dennis travel from the Peruvian Andes to the depths of the Amazon, in search of the lost city of Constitucion.

Ed Byrne and Andy Parsons brave temperatures as low as 50 below to drive across Siberia's infamous Road of Bones.

Sue Perkins and Liza Tarbuck drive the legendary Ho Chi Minh Trail, a network of dangerous roads hacked through mountains and jungles of Laos and Vietnam.

Hugh Dennis and David Baddiel drive Ethiopia's bone shaking roads to reach Askum, home of the Ark of the Covenant.

During the tail end of the rainy season, Angus Deayton and Mariella Frostrup drive up Madagascar's eastern coast.

Hugh Bonneville and Jessica Hynes take a terrifying road trip through the former Russian state of Georgia.

Funny men Phill Jupitus and Marcus Brigstocke head to Bolivia for a high-altitude road trip that promises adrenalin, hilarity and drop-dead beautiful scenery. Already good friends, the terrified duo first have to survive Bolivia's infamous Road of Death only to find themselves deep in notorious bandit country. Disorientation takes them by surprise as they have to navigate the stunning Salar de Uyuni, a salt lake so vast that Buzz Aldrin could see it from space. Their goal is to reach the ancient mountain city of Potosi whose silver once financed the great Spanish empire but at almost 5000 meters above sea level this proves to be a heart stopping finale.

Actor Will Mellor cajoles one of his best mates - comedian Keith Lemon - to join him on a high-octane road trip in Albania.

Another thrill-seeking adventure, this time with long-term mates Joe Wilkinson and Zoe Lyons - who've travelled to gigs together for years - taking on the wilds of eastern Turkey.

Certified 'indoorsman' Phil Wang convinces best friend Pierre Novellie - also not much better at outdoor stuff - to join him in Africa's Kingdom in the Sky.

Rhod Gilbert and friend and fellow comedian Angela Barnes cross Italy's most treacherous Alpine roads in Rhod's first adventure since being treated for cancer.

Joe Swash and Seann Walsh are no strangers to jungles after appearing on I'm A Celebrity..., but neither of them has sought an ancient Mayan temple in Guatemala before.

Former Soccer Saturday buddies Jeff Stelling and Chris Kamara reunite for an epic journey across Sri Lanka where they reaffirm their friendship along the way.

Old friends and fellow comedians Johnny Vegas and Lucy Beaumont take on perilous mountain drops and sheer cliff edges in a hair-raising trip on Montenegro's roads.

Comedians Babatunde Aleshe and Kae Kurd go on an unforgettable journey through the Lower Zambezi Valley, a place where the local wildlife is almost as terrifying as the roads.

Rhod Gilbert presents a selection of some of the funniest and most dramatic moments from recent series of the programme.

Jack Dee and Jake Lambert team up for a thrilling ride through the wilds of Kyrgyzstan, battling terrifying mountain roads, and a mystery illness that threatens their entire trip. Starting from the capital, Bishkek, Jack and Jake face multiple obstacles, from horrifyingly narrow roads with only a sheer drop for company, to muddy tracks rendered almost undriveable by rainstorms.

TV presenter Alex Brooker and comedian Ellie Taylor are thrown together for an adventure across Java where the erupting volcanoes pose as big a threat as the terrifying roads.

Rhod Gilbert presents a selection of some of the funniest and most dramatic moments from recent series of the programme.