When the Pontypandy Mountain Railway line opens, the team faces some tall challenges. From the tops of mountains to the tops of the trees, the crew is ready for high-climbing saves.
Where to Watch Fireman Sam: Mighty Mountain Heroes
Cast of Fireman Sam: Mighty Mountain Heroes
Steven KynmanFireman Sam
David CarlingStation Officer Steele
Su DouglasDilys Price
Tegwen TuckerSarah Jones
John HaslerFireman James
Ifan Huw DafyddGrandfather
Nigel Whitmeycast
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