About Admirals Arch
Admirals Arch is a natural rock arch on the southwest coast of Kangaroo Island in Flinders Chase National Park, South Australia. Formed by coastal erosion over thousands of years, the arch features stalactites and frames the Southern Ocean. It is notable for its dramatic coastal setting and as a haul-out site for a colony of long-nosed fur seals viewed from a dedicated boardwalk.
Visitors guide
Visitors follow a paved boardwalk and stairs down a rugged coastal cliff to a viewing platform beneath the natural arch. Expect a large eroded rock arch with stalactites, crashing waves, and a colony of long-nosed fur seals (New Zealand fur seals) resting on rocks below. The site offers ocean views, interpretive signage, and photo opportunities. Access is via the Cape du Couedic precinct within Flinders Chase National Park.
Key highlights
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Naturally formed coastal rock arch with stalactites
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Colony of long-nosed fur seals viewed from boardwalk platform
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Scenic boardwalk with cliff-top and ocean views
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Located in Flinders Chase National Park near Cape du Couedic
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Dramatic Southern Ocean coastline and erosion features
History of Admirals Arch
Natural formation created over thousands of years by weathering and erosion of coastal limestone. Located within Flinders Chase National Park, dedicated in 1919 as one of South Australia's earliest and largest conservation reserves to protect native flora and fauna.