 The change of control was gazetted on 1 March 1917.The national pleasure resort's development into “an important regional tourist destination was greatly assisted by the discovery in 1969 in Victoria Cave of the largest known Australian Pleistocene vertebrate fossil cave deposit.”

On 27 April 1972, it was renamed as the " Naracoorte Caves Conservation Park" upon the proclamation of the "National Parks and Wildlife Act 1972" which repealed the former act along with other statutes concerned with conservation.In 1982, the conservation park was listed on the now-defunct Register of the National Estate.