The Stony Point line is a greater-metropolitan commuter railway line in the city of Melbourne, Victoria, Australia. Operated by Metro Trains Melbourne, it is the city's only diesel service on the metropolitan network and the tenth longest line at . The line acts as an extension of the Frankston line with services running from Frankston station to the small town of Stony Point in the south-east, serving 10 stations via Leawarra, Baxter, Hastings, and Bittern. The line operates for approximately ~13 hours a day (from approximately 5:30 am to around 10:30 pm) with no 24 hour service available on Friday and Saturday nights—unlike other lines on the metropolitan network. Headways of 90 to 120 minutes are operated throughout the day due to limited patronage and infrastructure constraints. Trains on the Stony Point line run as two one-car formations of V/Line Sprinters. Sections of the Stony Point line opened as early as 1888, with the line fully extended to Stony Point in 1889. Only two stations have opened since its extension in the 1880s—Leawarra and Morradoo. The line was built to connect Melbourne and Frankston with the rural towns of Baxter, Hastings, and Bittern, amongst others. The line also facilitates freight services to the Port of Hastings. Significant growth has occurred since opening, with a plan to extend the Frankston line along part of the Stony Point line to Baxter. History 19th century The Stony Point line initially operated from Frankston to Baxter station, with services commencing in 1888. Extensions to Hastings, Bittern, and Stony Point were completed the following year in 1889. Branch lines were opened from Baxter to Mornington in 1889 and from Bittern to Red Hill in 1921. 20th century A new station was opened at Leawarra in 1906 and Morradoo in 1960. The Red Hill line was closed in 1953 with the Mornington line remaining until 1981. A long branch from Long Island Junction to Long Island was opened on 29 April 1969 to serve the adjacent steel mill. Passenger services on the entire line were withdrawn on 10 June 1981, and the line from Long Island Junction to Stony Point was closed on 22 June 1981. Services however recommenced on 26 September 1984. Upon the reopening, DRC railcars were used, with two MTH carriages present in between them making up a 4 car train. The DRC railcars were frequently used, either in multiple or with MTH