A Coastal Eucalyptus Forest: Mimosa Rocks National Park, NSW Australia

A Burrawang cycad in front of a forest of spotted gums, Mimosa Rocks National Park, NSW Australia

Nature’s Artworks : An Evergreen Cycad against a Eucalyptus Forest
The sights and scents of the Australian ‘bush’ are unique. The forests along the southeastern coast are home to a range of endemic plants. Here, the delicate-looking rich green fronds of a Burrawang (Macrozamia communis) – a locally-specific cycad – contrast against the tall, muted, trunks of the eastern Australian spotted gums (Corymbia maculata).

It is so easy to take one’s own backyard for granted!

After years of good intention but little action, I finally joined a local community walking group this year – the Bega Valley Bushwalkers -and managed to fit in some coastal walks in my region before setting off again on travel further afield.

One of these, back in early autumn, was in Mimosa Rocks National Park, just an hour north of me. While it is not the first time I’ve walked in this park (see: Coastal Walks, Far South Coast), this particular walk covered some sections that were completely new to me.

We started at the campground at Gillards Beach and hiked north, hugging the coast between Middle Beach and Middle Lagoon to the heritage-listed coastal property of Penders on Bithry Inlet, where we lunched. The return was via a different track through the woods back to Middle Lagoon, and then retracing our steps back to our cars.

This is considered a moderate hike by AllTrails, who follow the shorter straight out-and-back route. Thanks to the beach-walking and a few short uphills, I was exhausted when I finished. But the views and the beautiful coastal forests made it well worth it!

Join me among the eucalyptus:

Red-brown cliff face, golden sand and turquoise waters, Mimosa Rocks National Park, NSW Australia

Overlooking Gillard’s Beach
It’s a short walk from the carpark to the path, which overlooks the stunning coastline, rich with the colours of the Sapphire Coast.

Close-up: flowers and leaves of a coastal rosemary, Mimosa Rocks National Park, NSW Australia.

Coastal Rosemary – Westringia Fruticosa
Although this regional native is named for the shape of it leaves rather than it’s smell, the flowers carry a very faint, sweet fragrance that contribute to the fresh smell of the bush.

Rocks on the sandy shoreline, Middle Beach, Mimosa Rocks National Park, NSW Australia.

Nature’s Sculpture: Rocks on Middle Beach
There is beauty and drama everywhere I look.

View over grasses to the calm waters of Middle Lake, Mimosa Rocks National Park, NSW Australia.

Reeds and Grasses on the Lagoon
Soon we are working our way along the narrow stretch of land separating the South Pacific Ocean and Middle Lake. Middle Lake is a coastal lagoon that is intermittently open to the sea.

Twisted grey mangroves on Middle Lake, Mimosa Rocks National Park, NSW Australia.

A Tangle of Trees
Twisted grey mangroves (Avicennia marina) are among the vegetation that grows along the shores of Middle Lagoon.

Walkers on the sands along Middle Lagoon, Mimosa Rocks National Park, NSW Australia.

Across the Sands

Tall eucalyptus trees reflected in Middle Lake , Mimosa Rocks National Park, NSW Australia.

Middle Lake Reflections

Tall eucalyptus trees reflected in Middle Lake, Mimosa Rocks National Park, NSW Australia.

Still Waters
Middle Lagoon is a pristine body of quiet water framed by dense eucalyptus forest and backed by the coastal hills of the Sapphire Coast.

Bright green aquatic plants on the surface of Middle Lake, Mimosa Rocks National Park, NSW Australia.

Green
Sections of Middle Lake are sheltered by the surrounding native coastal scrub and eucalyptus forest. The shady, shallow waters are covered with bright green aquatic plants.

Blooms and leaves of a smooth cassia, Mimosa Rocks National Park, NSW Australia.

Beautiful Invader
Not all of the vegetation belongs here. Smooth cassia (Senna septemtrionalis) is an introduced shrub, widely considered an environmental weed in these eastern coastal regions.

A forest of spotted gums, Mimosa Rocks National Park, NSW Australia.

Coastal Eucalyptus Forest
We continue into a beautiful forest, mostly consisting of spotted gums (Corymbia Maculata), which thrive in these sandy coastal areas,

People at the trunk of a giant spotted gum tree, Mimosa Rocks National Park, NSW Australia.

A Giant Eucalyptus
The tallest known spotted gum in the world is in a forest about three hours north of here, but this one must be almost as large and old.

Looking up the tall trunk of a spotted gum tree, Mimosa Rocks National Park, NSW Australia.

Spotted Gum – Corymbia Maculata
It stretches up, straight and tall, through the canopy. These trees that typically grows to a height of 45–60 m (148–197 ft) – but I suspect that this one is taller.

Close-up: red bark peeling from a spotted gum, , Mimosa Rocks National Park, NSW Australia.

Colourful Bark
Spotted gums are distinguishable by their distinctive patchy and shedding bark …

Close-up: leaf litter, peeled bark, and fresh greenery, Mimosa Rocks National Park, NSW Australia.

Almost Abstract
… which, with the leaf litter, makes colourful patterns at our feet.

Walkers moving into green vegetation, Mimosa Rocks National Park, NSW Australia.

Into the Woods
The vegetation changes dramatically as we continue towards Bithry Inlet.

Lily pond, Pender

Lily in the Pond
Know as Pender’s, this area is part of a State Heritage site that was home to a collection of buildings designed by the renowned architect Roy Grounds (1905 – 1981).

Bithry Inlet, Mimosa Rocks National Park, NSW Australia.

Quiet Waters on Bithry Inlet
After lunch near Penders Beach, we find an alternate track back towards Middle Lagoon.

Eastern grey kangaroo, Mimosa Rocks National Park, NSW Australia.

Eastern Grey Kangaroo -Macropus Giganteus
We are treated to some native wildlife.

A twisted southern mahogany, Mimosa Rocks National Park, NSW Australia.

Bangalay Trees – Eucalyptus Botryoides
Colloquially known as southern mahogany, these tree can grow as a straight-trunked tree to 40 m (130 ft) high in favourable conditions. In these coastal areas, however, winds, storms, and salty air twist and contort them into wonderfully gnarled shapes.

White bark of a large, twisting, gum tree, Mimosa Rocks National Park, NSW Australia.

Twisting Gum
Some of the eucalypts seem to grow more sideways than up.

Shaggy cap mushroom, Mimosa Rocks National Park, NSW Australia.

Nature’s Artworks: Fabulous Fungus
Shaggy cap mushrooms (Boletellus emodensis) love the sandy soils, leaf litter, and decomposing wood found here in the shadows of the eucalypts and she-oaks.

Lace monitor, Mimosa Rocks National Park, NSW Australia.

Lace Monitor
A tree goanna (Varanus varius) scuttles off the path in front of us.

Walkers on Middle Beach, Mimosa Rocks National Park, NSW Australia.

Back on Middle Beach
Soon we are back walking along the beach, and almost back at our starting point.

Text: Happy Walking!

It was a beautifully and varied walk.

I finished exhausted – but happy.

Happy Walking!

Photos: 18March2026

 

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