Lincoln National Park protects the headlands and bays south of Port Lincoln. It looks over Boston Bay, with granite points, calm coves, offshore islands, and the wind-shaped Sleaford-Wanna dune system on the ocean side.
Cape Donington is good for lighthouse views and wildlife, while the short walk up Stamford Hill gives a broad look back over the harbour and coast. Bring water, sun protection, and enough fuel; the park feels close to town but quickly becomes open country.