When I was travelling around Australia 20 plus years ago in a 4WD, my wife and I camped in the Recherche NP. It is an isolated place, or was then, and area of great beauty. Unfortunately there is no drinking water available so you have to be totally self sufficient.
The pink is caused by algae blooms and occurs at certain times of the year, it was brown when I was there.
Very hot desert area and quite inhospitable, 40C plus and no shade, we were dependent upon flying doctor radio contact if anything happened.