Adam Henson is in the Lake District discovering the joys of the great outdoors. The countryside is open and free to everyone, and getting out and about is not only fun and inspiring - it is also good for body and mind. Adam explores all aspects of spending time outdoors, finding out about one of the first British adventurers, Millican Dalton, and getting mountaineering tips from an award-winning mountain leader. He also discovers the challenges faced by a farmer trying to keep her land open so everyone can benefit from the right to roam. This year marks the 80th anniversary of the Ramblers. Adam meets a family out on a holiday hike logging what they spot along the way - the good, the bad and the ugly! We also look back through the Countryfile archive to revisit the times we've featured the benefits and delights of the great outdoors, including Ellie Harrison taking part in an adventure race in the New Forest, Matt Baker finding out about a special bit of kit which enables wheelchair users to abseil, and John Craven looking back at a groundbreaking TV documentary. Matt Baker also reveals more about a new way in which Countryfile is harnessing the power of the great outdoors to benefit some of Britain's most disadvantaged youngsters. The first ever Countryfile Ramble for BBC Children in Need takes place on Saturday 10 and Sunday 11 October. Matt and his fellow presenters will be leading the way on a weekend of sponsored rambles which aim to get the whole of Britain out rambling to raise money and help change lives.