In the Caspian Sea lie some of the largest untapped reserves of the world's most sought-after energy resource. To transport it to the oil-hungry markets of Europe and North America, an 1100-mile pipeline is being constructed from its source to the Mediterranean. This Storyville film follows its route through lands that are not just geographically challenging but also politically dangerous, where conflicts rage and hostility to foreigners is common.
(Revised repeat from BBC4) (AD)