 These consisted of "burial sites" and a broad classification known as "archaeological sites".The following two sites at Inneston and Stenhouse Bay associated with the mining of gypsum are listed on the South Australian Heritage Register - the "Inneston Gypsum Complex" and the Stenhouse Bay Jetty.At least four shipwrecks which are located within the national park or immediately adjoining its coastal boundary are protected under Australian and state historic shipwrecks legislation.