Wave Rock is a natural rock formation that is shaped like a tall breaking ocean wave. The "wave" is about 15 m high and around 110 m long. It forms the north side of a solitary hill, which is known as "Hyden Rock". This hill, which is a granite inselberg, lies about 3 km east of the small town of Hyden and 296 km east-southeast of Perth, Western Australia. Wave Rock and Hyden Rock are part of a 160 ha nature reserve, Hyden Wildlife Park.