It came ahead of two trips in Peru and the Trans Siberian Express.

The line from Glasgow to Mallaig is a 164 miles long and runs by Loch Long, Loch Lomond, Loch Etive and Loch Eil.

It crosses the world's first concrete rail viaduct at Glenfinnan, which was featured in the Harry Potter films, and passes the silver sands of Morar.