Open Country

Mary-Ann Ochota joins a group of walkers, riders and horses as in the Scottish Highlands as they follow St Columba’s Way, a pilgrim route from St Andrew’s to Iona. Starting at the village of Killin, eleven people and four horses – Istia, Kirsty, Moy and Sasha - follow the old ways through Glen Lochay and Glen Lyon to the Bridge of Orchy. It's a trip organised by The Big Hoof, a group which promotes adventure and wellbeing through long journeys travelling with horses, on both new routes and ancient ones. Participants join the journey for as long as they want - on foot, horseback or bicycle. Mary-Ann meets the people who have decided to take part in this secular pilgrimage, discovers the healing power of walking with horses and strangers, learns why it’s not about simply riding horses but travelling with them as companions, and hears more about the Venture Trust, the charity the group is raising money for. Produced and presented by Mary-Ann Ochota

The landscape of Dungeness, at the south-eastern tip of England, is an unusual one. In this programme, Helen Mark finds out about stories surrounding sound and light on this peninsula which juts out into the English Channel. She visits the huge concrete "sound mirrors" - built in the 1920s as an early detection system for incoming enemy planes. Their technology became obsolete as aircraft speeds increased and radar was invented. They still stand today, but are now part of a nature reserve. Helen finds out how they worked, and experiences for herself their eerie sound projection abilities. She also learns about the wildlife which now thrives around them.A few miles further south, Helen visits the old lighthouse - one of five lighthouses which Dungeness has had in its time. The area stands on vast ever-shifting banks of shingle, which have expanded seawards over the years, leaving previous lighthouses stranded too far from the sea. The construction of a nuclear power station in the 1950s also obscured the lighthouse then in use, so it was decommissioned in 1960 and is now a tourist attraction. Helen walks up its 169 steps to the top and talks to the current owner, whose father bought it on a whim at an auction.In this programme Helen experiences the distinctive sounds of Dungeness - from the magic of the sound mirrors and the whistle of the tourist steam train to the ever-present crunch and rattle of the shingle underfoot. In this pancake flat landscape, sound and light both seem to move in mysterious ways.Produced by Emma Campbell

"They rise up suddenly out of fields, they're next to roads and they're even in the middle of the town golf course." Oban resident Antonia Quirke is intrigued by the strange cliffs that can be found everywhere along this stretch of Scottish coast, and she becomes more obsessed when she finds out that someone has been banging in titanium bolts to create new climbing routes up to their peaks. Joining her at the Dog Stone is the geologist James Westland who begins to unpick the history of these cliffs, plus two climbers she meets en route south, a volunteer with the Woodland Trust, Laura Corbe; and an Australian climber called Andy who has been helping to bang in the new routes.The producer in Bristol is Miles Warde

Thousands of years ago, large parts of Britain were covered with temperate rainforest - also known as "Atlantic woodland" or "Celtic rainforest". It's a habitat which needs high rainfall and low annual variation in temperature, so the western fringes of the British Isles provide perfect conditions. But temperate rainforest has been largely destroyed over the centuries and there are now only fragments of it left. One of the few surviving areas is in the Isle of Man, where work now is underway to expand and restore this unique habitat, thanks to a £38 million grant. At Creg y Cowin over 70 acres will be planted with native tree species, with around 20 acres left to regenerate naturally. Helen Mark visits the island to learn about this project and meets the Wildlife Trust volunteers involved in the early stages of getting the work underway. She also finds out about "tholtans" - abandoned agricultural dwellings which are a feature of the landscape of the Isle of Man. She meets a couple who are trying to document as many of these ruined buildings as possible, and finds out about links between the landscape and the Manx language.Produced by Emma Campbell for BBC Audio Bristol

The town of Whitby on the North Yorkshire coast has long been associated with fossils. In this programme, Rose Ferraby finds out about new geological research which sheds light on changes to the marine landscape of thousands of years ago - and asks whether it has lessons to teach us for the future. She meets a geologist and a marine biologist who tell her about the latest research, and talks to an expert on Whitby jet to find out how this unique type of fossil has become so linked with the town. She also visits the town's newly-established lobster hatchery, where work is underway to hatch out and release hundreds of thousands of juvenile lobsters in order to conserve marine stocks.Producer: Emma Campbell

"When I was a kid, a little junior baby map addict, it always worried me enormously - Flintshire (detached). Why is it detached? What's wrong with it?"Mike Parker is obsessed by an area of Flintshire called the Maelor. On the map he says it looks like a calloused big toe sticking into the plump ribs of England. Situated slightly south of a line between Wrexham and Whitchurch, it follows few of the expected border rules. And to prove his point, he's taking Miles Warde on a tour, from the Wychbrook to Hanmer and the border post on the strange Fenn's mosses. You'll also hear from a local Welsh language teacher called Dr Cymraeg - aka Stephen Rule - and visit the vicarage where author Lorna Sage grew up. Her most famous book is called Bad Blood.Mike Parker is the author of All The Wide Border: Wales, England and the Places BetweenThe producer in Bristol is Miles Warde

It's a land of standing stones, burial cairns and circles in the fields - Glen Lonan beside Loch Nell. Lupi Moll and Ivan Nicholson, who've known the area all their lives, take Oban resident Antonia Quirke on a short trek through the glen to see if they can work out why there are so monuments here. It was once part of the road of the kings, an ancient coffin route. It also includes a more recent memorial, a stone eye that marks the resting place of Lupi's wife, who died twelve years ago.The presenter is Antonia Quirke, and the producer in Bristol is Miles Warde

Dougie Vipond visits the River Tay, which runs from its source in the Highlands, past Dundee and out to sea. For centuries, the Tay estuary has shaped how creative people have expressed themselves. Starting at McDuff's Cross, the author Robin Crawford explains the Tay's link to Shakespeare - who was said to have drawn inspiration for his play Macbeth from this area. Pre-Raphaelite painters Turner and Millais knew the area well, Beatrix Potter imagined some of her most famous creations on the Tay's banks, and some of Scotland's best known artists such as Raeburn and Naismith depicted the landscape in their paintings. Dougie visits the studio of a contemporary landscape artist, Helen Glassford, to find out how her view of the silvery Tay continues to have an impact on artists today.Produced by Ruth Sanderson

Helen Mark visits Coleshill in Oxfordshire to learn about its wartime secrets. In 1940, with fear growing that Britain could be invaded by the German army, the estate became the training headquarters for a secret underground army. Over the next four years, thousands of country men - such as farmers, gamekeepers and foresters - were trained in underground resistance. They lived outwardly ordinary lives, but their job was to spring into action in the event of invasion, disappearing into bunkers buried in the landscape and emerging to disrupt the invading army through sabotage and hand-to-hand combat. Their life expectancy would have been around two weeks.With its quiet countryside location, far from military targets but near good transport links to London, Coleshill was the perfect place for this top-secret training base. High walls around the estate also kept its activities shielded from prying eyes. Even after the war the cloak of secrecy persisted, and today most people have never heard of the role Coleshill played in Britain's wartime history.Helen climbs down into a replica of the original underground operational base, used for training recruits, and finds out what life would have been like for these 'Auxiliary Units' or 'Auxiliers', as they were known. Sworn to secrecy, many never spoke of their experiences and took their knowledge with them to the grave. The feared German invasion never happened, so their services were not called on for real, and in many cases even their families never knew what the Auxiliers had signed up for. Now many people are piecing together their family histories and are keen to find out whether their fathers, grandfathers or uncles may have been part of one of the best-kept secrets of World War II.Produced by Emma Campbell

The landscape of south Wales has been shaped and defined by coal. In this programme, Helen Mark explores the Rhondda valley – finding out about is history and asking what its future may look like, now the heavy industry has gone. She visits a disused railway tunnel which once carried coal from the mines to the port of Swansea, but which has been closed and sealed off for decades. Now a group of enthusiasts is campaigning to re-open the tunnel as a tourist attraction. They have ambitions plans for it to become the longest cycling tunnel in Europe, with hopes that it could also function as an exhibition space, miniature concert hall and even a wedding venue. Helen puts on her safety helmet and is lowered down through a shaft into the tunnel, to see for herself how the structures of the past could take on a new life in the future.Produced by Emma Campbell