 Dunphy lobbied for the stand to be preserved upon becoming aware of plans to log the area but was unsuccessful and the area was logged in the 1920s and 30s.Dunphy put forward a plan for a Greater Blue Mountains National Park, which incorporated what is now Nattai National Park in the southeast in 1932.The creation of Warragamba Dam in 1960 limited access for development of land upstream, but it was not until 1991 when plans for permanent protection and national park status looked to become realised.