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&♯39;s greatest mountains, rivers, lakes, forests, volcanoes, caves, waterfalls and more...From Africa&♯39;s great Savannah Lands to the active volcano on Tanna; from Mt Everest to the Great Barrier Reef; from Croatia&♯39;s lush forests and jaw-dropping waterfalls to America&♯39;s iconic Grand Canyon, this series is set to inspire nature lovers the world over.