The park was originally gazetted in 1900 as Greenmount National Park before being renamed to honor Sir John Forrest.
The abandoned railway line running through the park was part of the Eastern Railway, which operated from 1884 to 1966.
The park contains the only railway tunnel in the Perth metropolitan area, which is now a habitat for protected bat species.
Hovea Falls is a cascade-style waterfall that flows over granite rock faces rather than a sheer vertical drop.
John Forrest National Park covers an area of approximately 2,676 hectares within the Darling Range.
The park serves as a key biodiversity corridor linking various bushland pockets in the Perth Hills.
During the late 19th century, the area was used as a sanctuary for native fauna before formal national park status was granted.
John Forrest National Park is Western Australia's oldest national park, established in 1900. Located in the Darling Scarp, it features an extensive network of trails through jarrah, marri, and wandoo woodland. The park is home to two primary waterfalls, Hovea Falls and National Park Falls, which are most active after winter rainfall. Visitors can view the historic Mahogany Creek railway line remnants, including the site of an abandoned 1890s railway tunnel. A resident population of kangaroos frequently congregates near the picnic areas. The park offers diverse habitats supporting species like the quenda and various native birdlife. Trails range from easy forest walks to challenging hikes connecting to the larger Munda Biddi Trail and Bibbulmun Track.
The elevated viewing platform overlooking the National Park Falls provides the best perspective for landscape photography.
Bring a sturdy pair of hiking boots, as the granite slopes can be slippery, especially after rain.
Pack a reusable water bottle, as potable water stations are limited to the main picnic areas.
Check the official park website for prescribed burn alerts or bushfire risk notices before visiting during the warmer months.
Do not attempt to walk through the railway tunnel if it is cordoned off, as it is a protected habitat for bats; avoid hiking during extreme heatwave conditions.
Stay on marked trails to protect fragile vegetation; maintain a respectful distance from native wildlife, especially kangaroos; all waste must be carried out.
