From Russia to Iran: Crossing the Wild Frontier (2017)

Explorer Levison Wood begins a new expedition in this four-part series: an epic, 2600-mile journey across the mighty Caucasus mountain range and five countries on the tense frontier between Europe and Asia. Accompanied by local guides and making his way by any means necessary, Levison travels and lives with some of the most fascinating and diverse people on Earth as he tries to reach his journey's end on the shores of the Caspian Sea.