Deep Creek Conservation Park
| Location | Deep Creek Conservation Park, Fleurieu Peninsula |
| Start/End Point | Cobbler Hill Campground/Picnic Area |
| Distance | 6.7 km circuit |
| Time | Approximately 3.5 hours |
| Difficulty | Difficult |
| Activity | Walking / Hiking |
| Region | Fleurieu Peninsula |
| Accommodation | Camping, mid-range and premium options — See accommodation options |
| Trail Connections | Heysen Trail (Section 1) |
Coast, Hills, and the Heysen Trail
The Blowhole Beach to Cobbler Hill and Marrano Creek circuit is Deep Creek Conservation Park at its most dramatic — a 6.7-kilometre loop that drops from hilltop grasslands to a wild ocean beach, follows a section of the famous Heysen Trail, and climbs back through bushland alive with birdsong. With views to Kangaroo Island, The Pages Islands, and the open waters of Backstairs Passage, this is a walk where the Fleurieu Peninsula reveals the full measure of its coastal beauty.
Deep Creek Conservation Park protects the largest remaining area of natural vegetation on the Fleurieu Peninsula, and this trail showcases the diversity that makes the park so valuable. From the windswept grasslands of Cobbler Hill to the sheltered creek lines and dense coastal scrub of the lower slopes, the walk traverses multiple vegetation communities in a relatively compact distance — though the elevation changes ensure that every metre is earned.
The Trail Experience
Descending to Blowhole Beach
The circuit begins at the Cobbler Hill Picnic Area or nearby campground, where expansive views across Backstairs Passage set the scene for the walk ahead. On clear days, the blue-green mass of Kangaroo Island dominates the southern horizon, with the smaller Pages Islands visible as dark silhouettes against the sea. The trail descends steeply through coastal scrub toward the beach — a descent that feels deceptively easy going down but will demand significant effort on the return.
Blowhole Beach itself is a stunning crescent of sand backed by steep, grassy hillsides that glow golden in the afternoon light. It is a popular spot for local fishermen and surfers, though the strong rip currents make swimming hazardous. Dolphins are sometimes spotted in the bright blue water offshore, and the contrast between the wild ocean and the sheltered beach creates a scene of remarkable beauty. Take time to explore the beach before beginning the loop — the rock formations at either end reward investigation.
The Heysen Trail Connection
From Blowhole Beach, the circuit joins the Heysen Trail — South Australia’s iconic 1,200-kilometre walking route that stretches from Cape Jervis to Parachilna in the Flinders Ranges. This section follows the first stage of the Heysen, climbing from the coast through dense scrubland toward Cobbler Hill. Walking this legendary trail, even for just a few kilometres, connects you to one of Australia’s great long-distance walking traditions and provides a taste of the varied terrain that makes the Heysen famous.
The trail climbs steadily through coastal vegetation, with the sound of the ocean gradually fading as you gain elevation. The scrub gives way to more open grassland near Cobbler Hill Campground, where the views return in spectacular fashion. Marrano Creek provides a shaded interlude on the final section, where the creek-line vegetation offers shelter from the wind and a habitat for small birds that flit between the branches.
Wildlife and Natural Heritage
Deep Creek’s wildlife is a constant companion on this walk. Western grey kangaroos graze the open grasslands near Cobbler Hill, often allowing walkers to approach within reasonable distance before bounding away with characteristic unhurried grace. Short-beaked echidnas forage in the leaf litter along the creek sections, and the park supports over 100 species of birds — from the crimson rosellas and honeyeaters of the scrubland to the raptors that patrol the coastal thermals.
Between June and October, the coastline visible from the trail becomes a grandstand for whale watching, as southern right whales and humpbacks migrate through the waters of Backstairs Passage. Their spouts and breaches are visible from the higher points of the trail, adding an unforgettable dimension to a winter walk.
Planning Your Walk
Vehicle entrance fees apply for Deep Creek Conservation Park, with online bookings recommended. The Cobbler Hill Campsite offers shelter, water, toilets, and fireplaces for those wanting to combine the walk with an overnight stay. The trail is steep in sections and can be slippery after rain — sturdy boots are essential. Carry at least 1.5 litres of water per person. Swimming at Blowhole Beach is not recommended due to strong rip currents. Dogs are not permitted on the trail.
The Blowhole Beach to Cobbler Hill and Marrano Creek circuit packs an extraordinary amount of variety into its 6.7 kilometres. Beach, bushland, creek, grassland, and ocean views combine with a taste of the Heysen Trail to create a walk that captures the wild essence of the Fleurieu Peninsula — a landscape where the mountains meet the sea and every turn in the trail reveals something worth stopping for.
Where to Stay
Planning an overnight trip? See our Kangaroo Island Accommodation Guide for the best places to stay near this trail.