Paul Merton's Secret Stations

Episode 3 (1x3)

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The comedian searches for the hidden remains of china clay mines in Luxulyan, Cornwall, and visits a training site for trench warfare on the Pembrokeshire coast. He also discovers a Manchester station that only gets one train a week, and makes a final trip on the West Highland Line to a stop that is 10 miles from the nearest road. Last in the series.