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The natural world is full of marvels : from the highest mountains to the deepest lakes on earth . In this 6 x 1 hour series we take a look at the most iconic natural wonders on the planet. The world's greatest mountains, rivers, lakes, forests , volcanoes, caves
, waterfalls and more...From Africa's great Savannah Lands to the active volcano on Tanna; from Mt Everest to the Great Barrier Reef; from Croatia's lush forests and jaw-dropping waterfalls to America's iconic Grand Canyon, this series is set to inspire nature lovers the world over .