Murujuga

Murujuga National Park on the Burrup Peninsula near Karratha in the Pilbara protects one of the world's greatest concentrations of ancient rock art — over a million individual engravings (petroglyphs) pecked into the ancient red-stained rocks across the peninsula. The name Murujuga comes from the Ngarluma/Yindjibarndi language and the park was gazetted in 2013, though it remains disputed by Aboriginal groups who feel the boundaries are inadequate given ongoing industrial development. The Burrup's petroglyphs — which may be up to 40,000–50,000 years old — include images of extinct megafauna such as the thylacine (Tasmanian tiger), providing an extraordinary window into ancient Australia. The park's creation was controversial, as industrial facilities including the Pluto LNG plant and ammonia facilities surround and interpenetrate the cultural landscape.

Murujuga's coastal and marine environments support diverse wildlife. Humpback whales pass through the adjacent Dampier Archipelago during their annual migration. Dugongs graze on seagrass meadows in the shallow bays. Flatback and green sea turtles nest on the peninsula's beaches. Osprey and brahminy kites nest on rocky headlands. Marsupials adapted to the harsh Pilbara environment, including the spectacled hare-wallaby, black-footed rock wallaby, and short-beaked echidna, inhabit the rocky terrain. Reptile diversity is exceptional in this warm, rocky Pilbara environment.

The vegetation of Murujuga is characteristic of the harsh coastal Pilbara, dominated by mangrove communities in sheltered tidal areas, coastal spinifex and salt-tolerant shrubs on the peninsula itself, and samphire communities in the intertidal zone. The rocky hillsides are sparsely vegetated with drought-adapted Acacia and other arid zone shrubs. The mangroves fringing the bays and inlets provide critical nursery habitat for fish and crustaceans. The vegetation is adapted to extreme heat, low rainfall, and coastal exposure.

The Burrup Peninsula is composed of ancient Pilbara granite — approximately 3 billion years old — among the oldest surface rocks in Australia. The distinctive rust-red colour of the rocks is caused by desert varnish — a manganese and iron oxide coating that accumulates on rock surfaces over thousands of years. This same dark coating is what makes the ancient rock engravings (petroglyphs) visible — artists pecked through the dark varnish to expose the lighter underlying rock. New varnish slowly re-forms over the engravings, providing a way to estimate relative ages. The geological antiquity of the rocks and their desert varnish coating are fundamental to the cultural heritage.

The Pilbara coast experiences an extremely hot, arid climate. Summer temperatures regularly exceed 45°C. Annual rainfall averages 300–350 mm, falling predominantly in summer from tropical cyclone remnants and thunderstorms. Winters are warm and dry (25–30°C days) — the most comfortable visiting season. Tropical cyclones affect the Pilbara coast with some frequency, causing significant storm damage. The combination of extreme heat, low rainfall, and high humidity (from the coastal location) creates a genuinely challenging environment.

Murujuga is among the most significant cultural heritage sites on Earth. The Ngarluma, Yindjibarndi, Mardudhunera, Yaburara, and other Pilbara Aboriginal groups are the custodians of the petroglyphs — images pecked into rock surfaces across the Burrup Peninsula over tens of thousands of years. The images include faces, human figures, animals (including the extinct thylacine and megafauna), and abstract patterns that represent the longest continuously maintained artistic tradition known. The Yaburara people — the primary traditional custodians of the Burrup — were devastated in the 1868 Flying Foam Massacre, one of the most serious colonial atrocities in WA, where dozens of Yaburara were killed in retaliation for the killing of two European men.

Murujuga National Park was gazetted in 2013 after decades of advocacy by Aboriginal groups and conservation organisations for formal protection of the extraordinary cultural landscape. The park's creation was controversial — it excludes significant areas of the peninsula occupied by LNG, ammonia, and other industrial facilities, and some Aboriginal groups argue the park boundaries are inadequate. Ongoing debate surrounds whether industrial activities adjacent to the engravings (which produce acid emissions that may be contributing to accelerated varnish breakdown) are damaging this irreplaceable heritage.

Self-guided walking routes allow visitors to view petroglyphs in their natural setting — a profoundly moving experience of connecting with ancient human artistic expression. The most accessible engraving areas are at Deep Gorge and the Hearson's Cove area. Aboriginal ranger-led cultural tours provide context and interpretation that enhances the experience enormously. The coastal scenery — red rocks, turquoise sea, and desert landscape — is extraordinary. Diving and snorkelling in the clear Dampier Archipelago waters is available through tour operators.

Murujuga National Park is adjacent to Karratha — the main Pilbara city, 1,500 km north of Perth. Accessible by conventional vehicle. The Karratha Visitor Centre provides information and tour bookings. Parks entry fees apply. Open year-round; best visited May–September. Aboriginal cultural tours should be booked in advance.

The primary conservation challenge is protecting the petroglyphs from industrial emissions. Acid gases produced by nearby processing facilities have been argued to accelerate the breakdown of the desert varnish coating, potentially degrading the ancient engravings. This has been a contested scientific and political question for decades. Monitoring programs track varnish condition and engraving weathering. The Aboriginal groups' advocacy for stronger heritage protections reflects both cultural and scientific concerns. Climate change, with increasing extreme weather events, poses additional long-term threats to this irreplaceable heritage.