According to Gandangara belief, in the primordial dreamtime (gun-yung-ga-lung, "times far past"), two creator figures, Gurangatch, a rainbow serpent, and Mirragañ, a quoll, went on a journey from a point on the upper reaches of the Wollondilly River, with Mirragan pursuing the former, until the trek ended at a waterhole named Joolundoo on the Upper Fish River.
In Gandangara belief, during the primordial dreamtime (gun-yung-ga-lung), two creator figures, Gurangatch, a rainbow serpent, and Mirragan, a quoll, embarked on a journey from an area near the Wollondilly River's upper reaches. Mirragan pursued Gurangatch until they reached a waterhole called Joolundoo on the Upper Fish River.