The World Australia Bookshop 4WD Links Toys Contact Us Return to the main 4WD page . The Pinnacles Western Australia. These strange rock formations are known as the Pinnacles . They are found in the Red Desert area of the Nambung National Park on the coast of Western Australia north of Perth and just south of Jurien Bay. It makes a nice day trip from Perth.
Some formations are several feet tall, others the size of a finger.
The current theory is that the Pinnacles are slightly harder columns of limestone that formed around tree tap roots that penetrated deep into limestone formed within ancient sand dunes. Water is always active in limestone and calcite is thought to have been preferentially deposited near these roots. When the softer limestone was eroded away, the columns remained. The road from Cervantes at the northern end of the park to the Pinnacles is 24km long and rough in parts where the base consists of limestone. Tide permitting, the beach can be driven north from Wedge Island to Grey - but you do not want to get bogged in the surf.