In Hyden, visitors will encounter Australia's biggest land-based wave - a 15-metre high, 110 metre long granite rock aptly named Wave Rock. Information about the 2.7 billion year old rock formation can be obtained at the Wave Rock Visitor Centre. Have a go at climbing the rock to witness beautiful views, including an outback sunset and golden wheat fields. Information. Located near Wave Rock is Mulka's Cave, where ancient Aboriginal rock paintings can be viewed. Another highlight is the Wave Rock Wildlife Park, home to rare white kangaroos and koalas. The final leg of the journey is a four-hour drive back to Perth. Starting in Hyden, travel west through Kondinin to Corrigin. From here, the landscape changes from golden wheat fields to green hills. Stop by the historic city of York to enjoy a coffee or visit some of the city's unique attractions before traveling the last 90 km to Perth.