Otford railway tunnel

The Otford railway tunnel is a brick-lined passage that cuts through steep hillsides and was built in 1891 with a single rail line inside. A round ventilation shaft rising above ground helps move air through the tunnel to keep conditions manageable.

The tunnel opened in 1888 to connect the Illawarra railway line and served trains through difficult mountain passes. Its use ended in 1920 when a new bypass route was completed nearby.

Italian workers made up the majority of the construction team and left a lasting impact on the local community through their craftsmanship. Their influence shaped how the tunnel was built and reflects the diverse labor that created this structure.

Access to the tunnel is restricted today since it no longer operates as an active rail route. Before planning a visit, check local conditions and whether access is permitted at the time you want to go.

Army explosives were detonated inside the tunnel during World War II as part of coastal defense planning. The blast damage meant significant repair work was needed afterward.

Location: New South Wales

GPS coordinates: -34.22200,150.99700

Latest update: December 12, 2025 12:00