Yina, 'the Old Man', is among the most charged ancestral figures of Pintupi country. In the Tjukurrpa he travelled to the rock hole Yumari, whose name means 'mother-in-law place', and there entered into an illicit union with a woman of the classificatory mother-in-law relation, a bond forbidden under Pintupi kinship law. A sorcerer of great power, his desire proved so violent that his testicles and penis separated from his body and became rocky outcrops, a rock hole and markings still visible within a few hundred metres of the site, which lies between the communities of Walungurru (Kintore) and Kiwirrkurra. The episode fixes in the land both the potency and the peril of transgressive desire, and Yumari remains a men's sacred site whose custodianship passes through the local patriline.