Sandstone Country Above the Hawkesbury at Gunderman

Overview

Gunderman sits beside the lower Hawkesbury, where the bushland of Dharug National Park rises quickly from the river into steep sandstone country. This part of the park is just north-west of Sydney near Wisemans Ferry, and it feels markedly removed from the city once you are in among the ridges, gullies and creek lines. The landscape is shaped by Hawkesbury sandstone, with cliff-edged slopes, sheltered valleys and pockets of richer vegetation along the watercourses.

The park as a whole covers about 14,834 hectares and forms part of a larger chain of protected bushland around the Hawkesbury and Broken Bay. Around Gunderman, that translates to a strong sense of continuity in the landscape, with long forested ridges, deeply cut creeks and broad views that are more about scale and texture than dramatic alpine scenery.

Highlights

The big draw here is the contrast between the Hawkesbury’s calm water and the rough sandstone country behind it. Cliffs, ridgelines and gullies give this section of the park a rugged character, while the surrounding bush changes subtly with aspect and moisture, from drier ridge-top forest to more sheltered creek-side growth.

Another standout is the way the terrain holds its shape over a wide area. Rather than a single showpiece feature, Gunderman is memorable for its continuous sweep of bushland, the rich colours of the sandstone, and the sense of being on the edge of one of the Hawkesbury’s most scenic natural corridors.

Best Time to Visit

Autumn through spring usually gives the most comfortable conditions for walking in this area, especially when the air is cooler and the sandstone ridges are less exposed to summer heat. After drier periods the open forest and rocky country can feel crisp and clear, while cooler months are often the best time to appreciate the broader views across the Hawkesbury bushland.

Spring is also a rewarding time for wildflowers, with grevilleas and other sandstone-country plants adding colour through the bush.

Plants and Animals

Gunderman’s surrounding bushland supports a mix of habitats, from open forest on sandstone ridges to moister gullies and creek flats. In the park near this area, grass trees are a familiar part of the landscape, and patches of rainforest occur in more sheltered spots. Grevilleas are also part of the seasonal character, especially when they are in flower.

Birdlife is one of the strengths of the area. Gang-gang cockatoos, satin bowerbirds, green catbirds, kookaburras, fairy-wrens, honeyeaters and lyrebirds are all recorded in the park. Reptiles such as goannas and leaf-tailed geckos are also part of the local fauna, and the broader bushland supports gliders including yellow-bellied, greater and sugar gliders.

Culture and Heritage

Dharug National Park is on the traditional Country of the Dharug Aboriginal people, and the area contains many Aboriginal sites. The landscapes around Gunderman were a source of food, medicines and shelter, and remain connected to cultural learning and story.

This part of the park is also tied to one of the most significant works of early colonial road building in Australia. Dharug National Park contains sections of the Old Great North Road, part of the Australian Convict Sites World Heritage property, where substantial stonework and the line of the old route still show how the road was forced through the sandstone country between 1826 and 1836.