Budj Bim

Budj Bim National Park encompasses approximately 1,750 hectares in southwestern Victoria near the town of Heywood, protecting an ancient volcanic landscape of significant geological and cultural importance. The park centres on the Budj Bim (formerly known as Mount Eccles) volcanic complex, an iconic maar crater lake surrounded by lava flows. In 2019, the broader Budj Bim Cultural Landscape was inscribed on the UNESCO World Heritage List, recognizing it as one of the world's most significant Indigenous cultural landscapes. The Gunditjmara people constructed an elaborate system of stone channels, weirs, and artificial ponds for aquaculture of kooyang (short-finned eel) that extends across the Budj Bim Cultural Landscape, evidence of sophisticated Indigenous engineering dating back at least 6,600 years.

Budj Bim National Park supports diverse wildlife associated with the volcanic wetlands and surrounding woodland. The lake within the maar crater provides habitat for waterbirds including black swans, wood ducks, and various migratory species. Common wombats are abundant throughout the park and are frequently encountered by visitors, particularly near the campground. Swamp wallabies, eastern grey kangaroos, and echidnas are regularly seen. The surrounding sclerophyll forest and heathland supports koalas, sugar gliders, and numerous bird species. Swamp harriers hunt over the wetland margins. Platypus have been recorded in the waterways. The volcanic soils support distinctive plant communities that in turn support specialist invertebrates and reptile communities.

The vegetation of Budj Bim National Park reflects the complex mosaic of volcanic soil types created by the lava flows, scoria, and lake deposits of the Budj Bim volcanic centre. Grassy woodland of yellow gum and manna gum covers the basalt lava flow areas. Dense heathland of tea-tree, heath-myrtle, and various proteaceous shrubs grows on older, more weathered volcanic surfaces. The lake margin supports reeds, rushes, and sedges forming productive wetland vegetation. The maar crater walls support a distinctive assemblage of ferns and moisture-loving plants. The park contains rare plant communities associated with volcanic substrates that are not found elsewhere in Victoria. Spring wildflower displays include native orchids, triggerplants, and other heathland flowers.

Budj Bim National Park is built on one of the most recently active volcanic complexes in Australia, with the last major eruptions of the Budj Bim volcano occurring approximately 30,000 years ago. The park sits within the Newer Volcanics Province of southeastern Australia, where relatively recent volcanism has created a distinctive landscape of lava flows, scoria cones, maars, and lava tubes. The Budj Bim maar crater was formed by a violent phreatomagmatic explosion when rising magma encountered groundwater, creating the circular depression that now contains Lake Surprise. Extensive lava flows from the volcanic centre spread across the surrounding landscape, and lava tubes formed where the surface of flowing lava solidified while the interior continued to flow. These lava tubes extend for considerable distances and are habitat for specialized cave fauna.

Budj Bim National Park experiences a cool temperate maritime climate influenced by its proximity to the Southern Ocean coast. Summers are mild and relatively dry, with temperatures rarely exceeding 30 degrees Celsius. Winters are cool and wet, with strong westerly and southerly winds bringing frequent rain. Annual rainfall is approximately 700 to 800 millimetres, distributed relatively evenly throughout the year. Mist and fog are common in the lake area, particularly on cool mornings. The volcanic terrain can create local microclimates, with the crater area being somewhat sheltered from the prevailing winds. Frost is common during winter nights. The reliable rainfall supports a diverse and productive vegetation community without the seasonal drought stress experienced in drier parts of Victoria.

Budj Bim is one of the most significant cultural landscapes of any Indigenous people in the world. The Gunditjmara people have inhabited this volcanic landscape for at least 30,000 years, with the volcanic eruptions of Budj Bim forming part of their Dreaming narratives. The sophisticated eel aquaculture system constructed by the Gunditjmara at Tyrendarra and Lake Condah using stone channels, weirs, and holding pools is among the oldest evidence of agricultural technology in the world, dating back at least 6,600 years. Kooyang (short-finned eels) were farmed in large quantities, providing a reliable and abundant food source that supported a substantial and largely sedentary population. The stone houses used by the Gunditjmara at Lake Condah are evidence of permanent settlement unusual among hunter-gatherer societies.

The national park at Budj Bim was established to protect the volcanic landscape, with the broader cultural landscape subsequently recognised through joint management with the Gunditjmara people. The Lake Condah aquaculture system and the associated stone house sites form the core of the UNESCO World Heritage Area gazetted in 2019. Parks Victoria manages the national park in partnership with Gunditj Mirring Traditional Owners Aboriginal Corporation, which plays a central role in interpreting and managing the cultural landscape. The World Heritage inscription has brought international recognition to the Gunditjmara's remarkable aquaculture achievements and has significantly increased visitor interest in the site. Ongoing archaeological research continues to reveal the extent and sophistication of the ancient aquaculture system.

The Lake Surprise crater walk is the signature attraction of Budj Bim National Park, circumnavigating the maar lake through volcanic heathland with opportunities to observe wombats and diverse birdlife. The lava cave exploration experience provides a fascinating geological and biological attraction. The Lake Condah aquaculture system, part of the broader Budj Bim Cultural Landscape World Heritage Area, can be visited on guided tours operated by Gunditj Mirring Traditional Owners. The rock formations associated with the Gunditjmara stone house sites and eel channels are extraordinary historical and cultural features. The summit of Budj Bim provides panoramic views across the southwestern Victorian volcanic plain. Wombat watching at dawn and dusk near the campground is consistently rewarding.

Budj Bim National Park has a well-developed campground with powered and unpowered sites, toilets, and picnic facilities. A visitor centre provides information about the volcanic geology and the UNESCO World Heritage Cultural Landscape. Walking tracks are well-marked and maintained. The park is accessed via Budj Bim National Park Road from Macarthur, approximately 17 kilometres to the north, or from the Hamilton Highway near Heywood. The nearest town with comprehensive facilities is Heywood, approximately 12 kilometres away. Guided cultural tours of the Lake Condah aquaculture system are operated by Gunditj Mirring Traditional Owners Aboriginal Corporation and can be booked through the visitor centre. A day pass fee applies.

Conservation at Budj Bim National Park integrates ecological and cultural values under co-management with the Gunditjmara people. Water management in the Lake Condah system is an important conservation priority, with efforts to restore natural water regimes to the aquaculture channels. The eradication of invasive willows from the waterways has been a significant conservation success, improving the ecological function of the wetlands. Weed control programs target blackberry, gorse, and various exotic pasture grasses that threaten native vegetation communities. The management of feral animals, particularly foxes and rabbits, protects the park's wildlife. The integration of Traditional Ecological Knowledge into park management represents a model of co-management for protected areas across Australia.