The Rock, New South Wales  The Rock is a town with a population of 1,236, in the Riverina region of southern New South Wales, Australia, in Lockhart Shire. It is south-west of Wagga Wagga on the Olympic Highway. The town is named after the large rocky hill overlooking the town, now called "The Rock Hill" but called "Yerong" in the local indigenous language. The reserve that includes The Rock Hill is an attraction in the area for bush-walking, rock-climbing, and observation of wildlife. It is also an Aboriginal sacred site, called "Kengal". The Rock Post Office opened on 1 September 1890. The Rock has a number of heritage-listed sites, including:  It is a railway junction town, being the junction point of the Boree Creek line from the Main South line. The Rock railway station is served by the twice daily NSW TrainLink XPT service to Melbourne and Sydney.