S2025, E5: Dougie is in Wester Ross to climb An Teallach, one of Britain's most impressive mountains. He meets the team working hard to repair the eroded path, and also finds out how other popular mountains are being affected by increased footfall and climate change. Rosie is at Loch Fyne in Argyll, where she meets the sheep farmers facing an uncertain future as a result of devastating attacks on their flock by sea eagles. Arlene is on the Forth and Clyde Canal.