A look at the people who work on Scotland's railways and steam enthusiasts who safeguard these iconic routes. They include train conductor Suzie Sangan, whose social media posts celebrate one of the world's most beautiful railway lines. Cameras also focus on engineers abseiling beneath the Forth Bridge to carry out essential checks on one of the world's most famous UNESCO Heritage sites. And there's a trip to Blair Castle for the pipes and pageantry of the Atholl Highland Gathering.

Cameras follow The Jacobite steam train across the Glenfinnan Viaduct. Vloggers Geoff and Vicki, who have visited all 2,567 of Britain's railway stations, board the Caledonian Sleeper on a 24-hour return journey to the UK's highest station at Corrour. Plus, a team of engineers scramble to erect the UK's largest landslide barrier when a slip threatens a section of the world-famous West Highland Line.

Documentary exploring the railways crossing the Scottish Highlands, and meeting both the workers who keep them running and the steam enthusiasts who safeguard these iconic routes. The programme takes the Strathspey steam railway through the Cairngorms National Park, taking in a charity abseiling event at the Forth Bridge along the way.

A look at the world's most beautiful railway, as we take a ride on the West Highland line, and meet the team who clean Britain's largest station roof and an artist who paints castles by train

A look at the world's most beautiful railway. We celebrate a golden age of steam travel on the East Fife coastal railway and meet the Atholl Highlanders' piper and dancers during a tartan takeover.