In which Australian state can one find a national park accessed by a major road which extends from Sydney to Port Augusta?
Mount Imlay National Park Mount Imlay is a national park in New South Wales (Australia), 387 km south of Sydney, named after the Imlay brothers, who were early pioneers to the district. It is accessed from the Princes Highway, south of Eden, New South Wales.
Caves Road (Western Australia) Caves Road is a 111 km scenic route in the South West region of Western Australia. It connects western Busselton with Augusta, running along or to the west of the Leeuwin-Naturaliste ridge, and is an alternative route to Bussell Highway. Caves Road is also a major component of the route from Cape Naturaliste to Cape Leeuwin, in what is known as the state's Capes Region.