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A special episode all about Scotland's national parks. Dougie is at Loch Lomond and the Trossachs National Park on patrol with the rangers. He finds out how they balance looking after the beautiful natural surroundings with the four million visitors who come each year.

Arlene is in Dunbar on the trail of John Muir, the Scot who first conceived the idea of national parks and set up the world鈥檚 first, Yosemite, in the United States.

And, as a new national park is due to be announced in 2026, Rosie is in Lochaber hearing from those who are for and against it.