Great Otway

Great Otway National Park encompasses approximately 103,000 hectares of diverse coastal and forest environments along the Otway Ranges coast of southwestern Victoria, covering the Great Ocean Road coastline from Torquay to Princetown and extending inland across the Otway Ranges. The park protects an extraordinarily diverse array of environments including coastal heathland, tall temperate rainforest, waterfalls, spectacular surf beaches, rugged coastal cliffs, lighthouses, and the internationally famous Otway treetop walkway. The Great Otway is one of Victoria's largest and most visited national parks, combining outstanding natural beauty with accessible visitor infrastructure along the iconic Great Ocean Road. The park encompasses the historic Cape Otway Lightstation, the oldest surviving lighthouse on mainland Australia.

Great Otway National Park supports an exceptionally diverse fauna. Koalas are abundant and frequently seen by visitors, particularly around the Great Ocean Road townships and in the gum forests of the ranges. Common wombats are reliably encountered at dusk near campgrounds. Platypus inhabit the clear forest streams throughout the park. Superb lyrebirds perform elaborate displays in the rainforest gullies and are frequently heard throughout the forest. Powerful owls and sooty owls are present in the tall forest areas. The coastal waters support little penguins, fur seals, and seasonal visitors including humpback and southern right whales. Wedge-tailed eagles and white-bellied sea eagles soar along the coastal cliffs. The park supports populations of the threatened long-nosed potoroo and spot-tailed quoll.

Great Otway National Park contains exceptional botanical diversity reflecting the transition from temperate rainforest in the wetter gully environments to coastal heath and scrub on the exposed clifftops. Cool temperate rainforest of myrtle beech, tree ferns, and moss-draped logs occurs in the sheltered gullies and on the moist south-facing slopes of the ranges. Tall wet sclerophyll forest of mountain ash and messmate dominates the upper slopes and plateaux of the Otway Ranges. The coastal fringe supports tea-tree scrub, coastal grassland, and wind-sculpted coastal heath with banksia, she-oak, and various heaths. The park is home to approximately 1,500 plant species, including many rare and threatened taxa associated with the coastal rainforest.

Great Otway National Park is underlain by Cretaceous sedimentary rocks, primarily sandstones, mudstones, and coal seams deposited in a rift valley during the early separation of Australia from Antarctica. These rocks, known as the Otway Group, represent a remarkable record of the last period of connection between Gondwana's southern landmasses. The spectacular coastal cliffs along the Great Ocean Road expose these ancient sedimentary layers, along with evidence of the dramatic Earth movements that tilted and folded them. Marine erosion along this exposed coastline has produced a striking array of sea stacks, arches, blowholes, and limestone platforms at various locations. The Otway Ranges themselves are a fault-bounded highland block uplifted during Cenozoic tectonics.

Great Otway National Park experiences one of the wettest climates in Victoria, with the Otway Ranges intercepting moisture-laden westerly airflows from the Southern Ocean. Annual rainfall in the ranges exceeds 1,800 millimetres in the highest areas. The coast is exposed to the full force of Southern Ocean weather systems, with strong winds and heavy swells characteristic of the region year-round. Summer temperatures on the coast are mild, typically reaching 20 to 25 degrees Celsius. The park can experience four seasons in a day, with rapid weather changes common. Fog is frequent along the coast in winter and spring. Snow very occasionally falls on the highest parts of the ranges during extreme cold snaps.

The Gadubanud people inhabited the Otway Ranges and coastal areas for tens of thousands of years, maintaining deep cultural connections to the forest and coastal environments. European exploration of the Otway coast was associated with Bass and Flinders' circumnavigation of Australia in 1799-1802. The construction of Cape Otway Lighthouse in 1848 marked the beginning of European settlement in the region. Timber operations extracting the tall eucalypt and blackwood timber of the ranges were important from the 1870s. The construction of the Great Ocean Road, built by returned soldiers after World War One between 1919 and 1932, opened the Otway coast to tourism and changed the region's character fundamentally.

Great Otway National Park was created in 2005 through the amalgamation of several previously separate protected areas including Otway National Park, Cape Otway State Park, and various other reserves. The amalgamation created a more coherent protected area management unit covering the entire Otway coast and ranges. The Cape Otway Lightstation, Australia's oldest surviving mainland lighthouse, is managed as a heritage tourist attraction within the park. Parks Victoria manages the park with a focus on balancing the high visitor numbers along the Great Ocean Road with the protection of the park's ecological and heritage values. The park attracts several million visitors annually.

The Otway Fly Treetop Walk, a 600-metre elevated steel walkway and zipline through the rainforest canopy, is one of Victoria's most popular nature-based attractions. Hopetoun Falls, Erskine Falls, and Stevensons Falls are among the spectacular waterfalls accessible by short walks from roadside trailheads. Cape Otway Lightstation provides access to the historic lighthouse and outstanding coastal and wildlife viewing. The Surf Coast Walk and Great Ocean Walk are multi-day coastal walking tracks traversing some of the park's most spectacular scenery. Blanket Bay and Parker Inlet campgrounds provide camping within the park. The koala trail at Great Ocean Road townships offers reliable koala sightings.

Great Otway National Park has extensive visitor facilities including campgrounds at Blanket Bay, Parker Inlet, and other locations, day-use picnic areas at numerous points, walking track networks, and commercial tourism operations. The park is accessed via the Great Ocean Road from Geelong, approximately 100 kilometres from Melbourne, or via the Princes Highway and inland roads. The Great Ocean Road is one of the world's most scenic coastal drives. Public transport services operate along the Great Ocean Road during peak tourist season. The townships of Aireys Inlet, Lorne, Apollo Bay, and others within or adjacent to the park provide comprehensive accommodation, dining, and visitor services. A parks pass or camping fee applies.

Great Otway National Park faces significant conservation challenges associated with its extremely high visitor numbers and the fragmented nature of the reserve, which is crossed by the Great Ocean Road and interspersed with private land. Managing visitor impacts on sensitive coastal vegetation, restricting the spread of invasive weeds, and protecting koala habitat from road kill are major ongoing challenges. Sambar and fallow deer cause substantial damage to the understorey vegetation across the park. The management of public access during periods of high bushfire risk requires regular closure of tracks and campgrounds. Sea level rise and increased storm intensity associated with climate change pose long-term threats to the park's coastal infrastructure and ecosystems.