Yurlunggur (Yulunggur) is, in the ethnography of W. Lloyd Warner, the Murngin (Yolngu) name of the Great Copper Python, glossed in the comparative literature as 'the great father'. He lay in the sacred waterhole at Mirrirmina until the menstrual and birth blood of the two Wawalag sisters polluted his well; roused, he rose with the wet-season rains, swallowed the sisters and their children, and afterwards disgorged them. The myth and its associated Kunapipi rites, in which the python's swallowing and bringing-up is re-enacted as the death and rebirth of initiates, were documented by Warner and analysed by Ronald M. Berndt. The same rainbow-serpent being is known in feminine form elsewhere in Arnhem Land as Julunggul; among the Yolngu of Warner's account the python is the great father, distinct from that female tradition.