Police are at the scene of a crash at Wirrina Cove.

The Medstar helicopter has been called to the scene with multiple CFS and ambulance services.

Two cars collided on Main South Road, Wirrina Cove about 10.30am on Sunday 16 October.

The road is blocked to all traffic while emergency services clear the scene.

The road closure may impact on traffic heading to and from the SeaLink Kangaroo Island ferry terminal at Cape Jervis.

Detours are in place via Delamere.