Yarra Ranges National Park is located in the Central Highlands of Australia's southeastern state Victoria, 107 km northeast of Melbourne. Established in 1995 and managed by the statutory authority Parks Victoria, the park features a carbon-rich, temperate rainforest and a subalpine eucalypt forest on its northern plateau. It is home to large stands of mountain ash, the tallest tree species in Australia and among the tallest in the world. A wide diversity of fauna make their home across the park's 76,003 hectares, including kangaroos, wallabies, wombats, platypuses and 120 species of native birds. Among the conservation challenges facing Yarra Ranges National Park are climate change and invasive species of weeds.

Eucalyptus regnans, known variously as mountain ash, swamp gum, or stringy gum, is a species of medium-sized to very tall forest tree that is native to the Australia states of Tasmania and Victoria. It is a straight-trunked tree with smooth grey bark, but with a stocking of rough brown bark at the base, glossy green, lance-shaped to curved adult leaves, flower buds in groups of between nine and fifteen, white flowers, and cup-shaped or conical fruit. It is the tallest of all flowering plants; the tallest measured living specimen, named Centurion, stands 100 metres tall in Tasmania.