TheTravelCamel’s Shane Dallas joins Paul and Elizabeth for the fourth installment in their series about Back to Nature Travel. This time, they take you to some of the world’s most spectacular canyons, gorges, and cliffs. Learn about one of Australia’s greatest natural wonders – that you might not have heard of – the Carnarvon Gorge in Queensland. Unlike much of the continent, the gorge is lush and vibrantly green, with stark escarpments. Also, experience America’s amazing Grand Canyon and Ireland’s massive Cliffs of Moher, and find Shane’s choice for the greatest walk in the world.