Lincoln National Park is a national park in South Australia, Australia, 249 km west of Adelaide and 9.5 km south of Port Lincoln. It consists of a mainland area on the Jussieu Peninsula and a number of nearby Islands. The park contains significant sites of natural, indigenous and early European heritage.GeographyJussieu PeninsulaLincoln National Park occupies the triangular Jussieu Peninsula, at the south eastern tip of Eyre Peninsula. The western gateway to the park is an isthmus which connects it to the mainland. The Sleaford Mere Conservation Park abuts the western border of the park. Land-based park entry is made by road at both the northern and southern sides of the isthmus. The south road is 4WD access only.The northern coastline of the peninsula curls northward to Cape Donington, where the Cape Donington Lighthouse is situated. Cape Donington is the southern point at the mouth of Boston Bay, the large, sheltered deep water harbor on which the township and wharf of Port Lincoln are located. The eastern coast of the national park from Cape Donington to Cape Catastrophe opens into Spencer Gulf. Much of the southeastern section of the park falls within the Memory Cove Wilderness Protection Area. This gated area has restrictions on visitor numbers and activity in order to best conserve the region's flora and fauna.The southern boundary of the national park curls southward from Mary Ellis Wreck Beach in the west, to West Point and Cape Catastrophe in the east. The coastline varies from extensive sand dunes behind Sleaford Bay to limestone cliffs further east towards Cape Catastrophe. The seas in this exposed area are very rough, with dangerous rips leading to numerous drownings.