Marramarra National Park Park or open space National park on the south bank of the Hawkesbury River to Sydney's north. Locate -33.544438927619, 151.07762564008 Milestone Opened 1979 {"name":"Opened","target":"","target_text":null,"date":{"#markup":"<span class='date'>1979<\/span>"},"date_start":"1979","date_end":"1979"} Type Park or open space {"name":"Park or open space","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} Marramarra National Park by Niall Clugston , 2008 Dharug country before the Europeans came, Marramarra National Park contains many Aboriginal sites and artefacts. It was established in 1979 in rugged bush near Hornsby. more ยป