Admirals Arch

Admirals Arch sits at Cape du Couedic on the south-western tip of Kangaroo Island, where the Southern Ocean has spent millennia carving through the coastal limestone to produce one of South Australia's most striking geological formations. The arch itself is impressive enough, but what makes a visit here memorable is what lives beneath it - a colony of hundreds of New Zealand fur seals that haul out on the wave-washed rocks below.

The site sits within Flinders Chase National Park, and entry is covered by the standard park fee of approximately $15-$25 per vehicle per day.

What to See and Do

A well-maintained boardwalk descends from the car park through native scrub, dropping down a series of stairs to a viewing platform positioned directly above the arch and the seal colony. From here you can watch the seals at close range - pups tumbling over each other, adults jostling for position on the rocks, and the occasional animal surfing in on a wave. Information panels along the route explain the geology of the arch and the life history of the fur seals.

The Southern Ocean pushes through the arch with considerable force, and even on calm days the swell surges visibly through the opening. On rougher days the noise and spray are substantial - this is an active, dynamic place rather than a static geological curiosity.

Wildlife watching and photography are the primary activities here. The elevated platform gives you a clear sightline down into the colony without disturbing the animals, and the framing of the arch against the ocean makes for compelling photographs at almost any time of day.

Be aware that while the platform keeps you at a safe distance, fur seals can move quickly and can be aggressive if approached on the rocks. Keep well clear of any animals you encounter on the boardwalk.

Getting There and Access

Admirals Arch is located approximately 1.5 hours from Kingscote via the south coast road. Cape du Couedic is the westernmost accessible point of Kangaroo Island, so allow adequate time for the drive - the roads are manageable but not fast.

A car park is located at the trailhead. The boardwalk and stairs descend to the viewing platform, but the gradient is steep in sections and the route is not suitable for visitors with mobility issues. The site is also very exposed to wind, so bring a layer regardless of the season.

There is no café or food service at the arch itself. Facilities are limited to the car park, boardwalk infrastructure, viewing platform, and information panels.

History

The Cape du Couedic lighthouse stands near the arch and dates to the early twentieth century, built to warn ships away from this notoriously hazardous stretch of coastline. The lighthouse keeper's cottages have been converted into accommodation and are available to book if you want to spend a night at the far end of the island - an unusual and quiet base for exploring the western park.

Best Time to Visit

Admirals Arch is worth visiting year-round, but winter typically brings the largest aggregations of New Zealand fur seals to the rocks below, making that season particularly rewarding for wildlife watching. In any season you'll find seals present, as the colony uses the site consistently.

Visitor Tips

• Combine with Remarkable Rocks on the same day - the two sites are only 10 kilometres apart, and together they make a full and varied day in the western end of Flinders Chase National Park.
• Dress for wind. Cape du Couedic is one of the more exposed points on Kangaroo Island, and conditions can change quickly.
• Arrive with a full tank of fuel. There are no services at this end of the island.
• Your Flinders Chase National Park entry fee covers both Admirals Arch and Remarkable Rocks, so there's no reason not to visit both in the same outing.