Chris Tarrant: Extreme Railways

Cette semaine, Chris Tarrant est en Afrique de l'Ouest pour découvrir l'un des plus grands chemins de fer africains de l'ère coloniale. Construit par des colons français au prix de dizaines de milliers de vies africaines, ce chemin de fer relie la capitale, Brazzaville, loin à l'intérieur des terres sur le fleuve Congo, à la côte située à 310 miles.

Chris Tarrant crosses the Australian Outback, to find out the truth about an amazing railway. The 2,000 mile-long Adelaide to Darwin Railway is commonly known as "The Ghan Line". It's named after the luxury passenger service that runs on it and the name "Ghan" is said to derive from the Afghan-run camel trains that ferried people and goods across the Outback in the 19th Century.

This week Chris Tarrant is travelling on the Konkan railway which runs down the west coast of India connecting the port cities of Mumbai and Mangalore. Although the British Empire built 40,000 miles of track across this vast sub-continent between, they stayed clear of this narrow, boggy strip of land as it was such a treacherous and difficult environment in which to build a railway.