From Russia to Iran

Kick-start Levison's walk in Sochi, Russia, where he boards an army helicopter that will fly him to the starting point. Check out the remote track that leads into the Caucasus as he searches for a local guide who can take him to the nearest town.

Experience breathtaking landscapes, bizarre ruins, and a Sufi ceremony as Levison carefully crosses Chechnya, which is now ruled by a terrifying strongman. Feel danger all around as he enters Dagestan, where terrorists hide out in the mountains.

Venture into the badlands of Dagestan, a Russian region that is on the British Foreign Office's list of places no one should ever visit. Watch Levison and his local guide avoid danger as they make their way through the country by any means available.

Run into nomadic shepherds and dangerous dogs as Levison travels through the arid Gobustan District in Azerbaijan. Explore a castle halfway up a cliff, visit Stalin's birthplace, and get to know a monk who lives solo atop a 45-metre-tall monolith.

Take a closer look at a forgotten European war zone in the Nagorno-Karabakh region of Azerbaijan, then join Levison for a trek through Armenia. Hike into Iran as he makes his way to Tehran, the Caspian Sea, and the journey's successful end.