The Ikara–Flinders Ranges National Park, previously called Flinders Ranges National Park, is located about 430 km (270 mi) north of Adelaide, Australia. It is northeast of the small town of Hawker, in the northern central part of South Australia’s largest mountain range, the Flinders Ranges. The park spans 95,000 ha (370 mi) between Hawker and Blinman. It is famous for a landform called Wilpena Pound, and other notable features include the Heysen Range and the Brachina and Bunyeroo gorges. The Heysen Trail and Mawson Trail run through the park.

The entire park is part of the Flinders Ranges rock layers, which contain many different types of fossils that show how animal life began on Earth over 350 million years. On Enorama Creek, there is a special rock layer called a Global Boundary Stratotype Section and Point (GSSP, or "Golden Spike"), approved by the International Commission on Stratigraphy in 2004. This GSSP marks the start of the Ediacaran period, which was recently discovered. The park includes many heritage-listed sites and is one of seven separate areas sent to UNESCO in 2021 for possible World Heritage Site status. As of August 2025, these areas remain on UNESCO’s tentative list.

History

For thousands of years, the Adnyamathanha people have lived in the Flinders Ranges. On 12 February 2016, the park was renamed to include the Adnyamathanha word "Ikara," which means "meeting place." This name refers to the original name for Wilpena Pound.

Features and accessibility

The park is located about 430 km (270 mi) north of Adelaide city centre and covers 95,000 ha (370 mi²), between Hawker and Blinman.

The most notable feature of the park is Wilpena Pound, a large, sickle-shaped natural amphitheatre covering nearly 80 km² (31 sq mi). It includes the highest peak in the range, St Mary Peak (1,170 metres (3,840 ft)). The Heysen Range is within the park. The area has many lookouts, scenic views, small canyons, and unusual rock formations, such as Brachina Gorge, Bunyeroo Gorge, Arkaroo Rock, Wilkawillina Gorge, and Hucks Lookout. The park also has stone ruins from early European settlement and Aboriginal rock art sites. A rock formation known as the Great Wall of China is located just outside the park.

The park centre at Wilpena Pound is reachable by a paved road from Hawker. Other areas can be accessed by unpaved roads, which are mostly suitable for two-wheel drive vehicles unless weather conditions are poor or after heavy rain. Camping is allowed in many places within the park.

The Heysen Trail (named after artist Hans Heysen) and the Mawson Trail (named after geologist Sir Douglas Mawson) run through the park.

The park is managed jointly by the National Parks and Wildlife Service South Australia, which is part of the Department for Environment and Water, and the Adnyamathanha Traditional Lands Association (since 2011).

Geology

The Flinders Ranges are mostly made of folded and faulted sediments from the Adelaide Geosyncline. These thick layers of sediment were deposited in a large basin during the Neoproterozoic era on the passive edge of the ancient continent Rodinia. During the Cambrian period, about 540 million years ago, the area experienced the Delamerian orogeny, which folded and faulted the sediment layers into a large mountain range. Since then, erosion has worn down the mountains, creating the lower ranges seen today.

Most of the high ground and ridges in the Flinders are made of quartzite layers that are exposed along the length of the mountain range. The high walls of Wilpena Pound are formed by the exposed layers of the Pound Quartzite in a synclinal structure. The same rock formation also creates other high areas in the Flinders, such as the Gammon Ranges and the Heysen Range. Cuesta landforms are also common in the Flinders.

Paleontological significance

Ikara–Flinders Ranges National Park is part of the Flinders Ranges geological formations, where many different types of fossils show how animal life began on Earth over 350 million years.

The International Union of Geological Sciences (IUGS) recognized the Ediacaran fossils in the Ediacara Hills, Flinders Ranges, as one of 100 important global geological heritage sites in a list published in October 2022. The IUGS defines a Geological Heritage Site as a place with geological features or processes that are scientifically important, used as references, or that have greatly helped the study of Earth’s history.

The area includes a Global Boundary Stratotype Section and Point (GSSP), also called a "Golden Spike," defined by the IUGS International Commission on Stratigraphy (ICS) and approved in 2004. A GSSP is a specific point in a rock layer that marks the beginning of a time period on the geologic time scale. It is located in Enorama Creek within the national park and marks the start of the Ediacaran period, which was recently identified for the first time.

The park is one of seven separate areas submitted to UNESCO’s World Heritage Centre in April 2021 for possible recognition as a World Heritage Site under criterion (viii). As of August 2025, it remains on UNESCO’s "tentative" list. Studies from 1947 by Reg Sprigg and two studies from 1949 by Sir Douglas Mawson support the application, which will be voted on in 2026. The full request for World Heritage status was sent to UNESCO in Paris in March 2026.

Flora and fauna

The plants in the Flinders Ranges are mostly species that grow well in a semi-arid climate, such as cypress-pine, mallee, and black oak. Areas with more moisture near Wilpena Pound support plants like grevilleas, Guinea flowers, lilies, and ferns. Reeds and sedges are found near permanent water sources, such as springs and waterholes.

After dingos were removed and permanent waterholes were created for livestock, the numbers of red kangaroos, western grey kangaroos, and euros in the Flinders Ranges increased. The yellow-footed rock-wallaby, which was almost extinct after Europeans arrived due to hunting and being hunted by foxes, has now stabilized. Other native marsupials in the area include dunnarts and planigales. Efforts to bring back the western quoll and the brushtail possum in the park have continued since 2014. Echidnas are the only monotreme species found in the park. A large number of insect-eating bats live in the area. Reptiles include goannas, snakes, dragon lizards, skinks, and geckos. The streambank froglet is a type of frog that lives only in this region.

The Flinders Ranges have many bird species, such as parrots, emus, wedge-tailed eagles, and small numbers of waterbirds. The land in the national park has been recognized by BirdLife International as an Important Bird Area (IBA) because it supports a stable population of the short-tailed grasswren, a bird found only in a limited range.

Heritage listings

Many sites in the national park are listed as heritage places on the South Australian Heritage Register:

• Eddie Pumpa Outstation
• Hayward Homestead Ruins
• Impact Ejecta Horizon Late Precambrian Shales Geological Site
• Enorama Mail Station and Rubbish Dump
• Oraparinna Diapir
• Wilpena Homestead Complex
• Wilpena Pound (geological landform)
• Stromatolites in the Precambrian Trezona Formation, Enorama Creek
• Wills Homestead Complex Ruins
• Appealinna Mine Ruins and Miners Hut
• Wilkawillina Archaeocyathae Geological Site
• Dingley Dell Homestead Ruins
• Hill's Cottage, Wilpena Pound
• Enorama Diapir
• Oraparinna Station Blacksmith's Shop