The 26,875-hectare (66,410-acre)[1] national park is situated 373 kilometres (232 mi) east of Melbourne via the Princes Highway[2] and is centred on the Errinundra Plateau, a southwards extension of the Monaro Tablelands of New South Wales.

The Errinundra National Park preserves the largest remaining cool temperate rainforest in Victoria and supports some of south eastern Australia's most spectacular old growth forests.

There are also many rare and threatened species of flora and fauna, including powerful owls, tiger quolls and long-footed potoroos.

In winter, rain and snow generally make the unsealed roads impassable.

There has been extensive logging of all forest types surrounding the park including Brown Mountain forest and there have been some instances of logging within the national park's boundaries due to administrative errors.