A magical steam train transports Harry Potter in Harry Potter, the Chamber of Secrets, to the wizard school of Hogwarts through spectacular countryside. This is The West Highland Railway Line which runs 42 miles from Fort William to Mallaig. Along the way, the train passes through some of the scenery shown in the film, including Ben Nevis and the lochs and rugged countryside of Glen Nevis.

Steall Falls, the waterfall at the base of the mountain, is where Harry's battle with a dragon for the Triwizard Tournament in Harry Potter and the Goblet of Fire.

At Glenfinnan Viaduct, the Hogwarts Express steams across 416 yards of raised track over 21 supporting arches. Harry and Ron miss the train and fly to Hogwarts in a car that zooms around and through some of the viaduct's 100foot high arches. (The Weasley's car also flew over other parts of Lochaber!) The train stalls on the viaduct, as Dementors stalk the train and torture Harry.

A further scene was filmed nearby showing Harry looking out over Loch Shiel and although unused in the cinema release, this scene can be seen on the DVD.

Other Highland filming include a craggy, desolate hillside in the mountains of Glencoe close which, in reality, is close to the Clachaig Inn as the location for Hagrid's stone hut Harry Potter and the Prisoner of Azkaban; Loch Eilt where Hagrid skipping stones across the water and Black Rock Gorge near Evanton in Easter Ross which was filmed for Harry Potter and the Goblet of Fire.