I just came across this excellent blog called "Listen to Africa". It's an ambitious project led by two adventurous spirits, Huw and Bex. Their chosen form of transport is a bicycle and the plan is to spend two years in Africa covering around 24,000 km.
En route they'll record the sounds of nature, music, voices and other noises of interest. They recently recorded the world's longest train carrying iron ore through the dry landscape of Mauritania. Check out their excellent blog and listen to some of their latest recordings.
Image of the world's longest train, Mauritania -- © Lexicorient Guide to Mauritania, Tore Kjeilen

