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At the very end of East Africa's Great Rift Valley, there's a "land that time forgot" - the rolling grasslands of the Luangwa Valley.
The Namib Desert is one of the oldest deserts of all. It's also one of the most diverse. With 50-degree temperatures and half a millimetre of rainfall annually, how is this possible?
Journey from the lava ramparts to its fiery heart, we'll discover how this place became one of the most important areas of biodiversity in the world.