Karri Giants and the Warren River Valley

Overview

Warren National Park sits near Pemberton in Western Australia’s southern forests, where the Warren River cuts through a deep valley beneath tall karri. The park covers about 3,000 hectares and protects a strong example of largely untouched karri forest, with the river, smaller gullies and damp creeklines shaping much of its character.

What stands out here is the sense of height and depth at the same time. The karri rise straight out of the forest floor, while the land falls away to the river below, giving the park a more dramatic feel than many forest reserves nearby.

Highlights

The park’s defining feature is its karri forest, including some of the State’s most majestic trees. Karri grow only in the south-west of Western Australia, and in Warren National Park they are paired with the steep-sided Warren River valley, which brings in broad forest views as well as close, shaded stretches beside the water.

Scenic points across the valley look down into the river corridor, where the forest changes with the moisture. Along the banks, karri are joined by river banksia, peppermint and Warren River cedar, giving the riverside sections a different texture from the higher slopes.

Best Time to Visit

Warren National Park can be rewarding at any time of year, but late winter and spring are especially appealing when the forest is fresh, the river country is at its greenest and flowering plants bring extra colour to the understorey. Spring is also a good season for seeing climbers and wildflowers through the karri forest.

From September to February, flowering karri draw in purple-crowned lorikeets, which are often heard in the canopy before they are seen. In the wetter months, fungi are another noticeable part of the landscape.

Plants and Animals

Karri forest is the heart of the park, with very tall trees rising above an understorey that changes with light and moisture. Near the river and along damp gullies, you may see river banksias, peppermints and Warren River cedar, while red coral vine and white clematis add seasonal colour through the lower layers of the forest.

Birdlife is one of the more noticeable parts of the park. Purple-crowned lorikeets feed in flowering karri, splendid fairy-wrens move through the undergrowth, and Baudin’s black cockatoos can sometimes be seen passing overhead. Fungi are also a feature, particularly in the cooler, wetter part of the year.

Culture and Heritage

Warren National Park is recognised as Bibulmun/Piblemen Country. The park also holds a smaller piece of more recent forest history in the old hand-built Heartbreak route, which was originally cut to give firefighters access down to the river valley.