Harwick Branch Line

The Harwick Branch Line, introduced in Sodor's Legend of the Lost Treasure, is a branch line that runs from Harwick up to Arlesburgh and back. The branch line is run by Ryan, who handles the goods traffic, and Daisy, who looks after the passengers.

When the initial line was being constructed, the ground became unstable. Engineers declared the site unsafe and the track had to be re-routed. Soon after, Thomas had a severe accident, causing the unstable ground to completely give way. This giant opening revealed a long-lost, hidden cavern, known as "Calles Cavern".

Later, the construction of the Harwick Branch Line resumed and the new re-routed line was finally finished. Many of Sir Topham Hatt's engines as well as the Sodor Construction Company assisted in the building of the Harwick Branch Line.