The mythology of the goddess Kāmākhyā was introduced in the early medieval Kālikāpurāṇa (ninth–eleventh century CE), a Śākta text that linked the yoni of Sati to the Assamese goddess Kāmākhyā. This lecture will analyse the medieval and pre-modern Purāṇas and Tantras compiled in northeastern India—focusing on their mythological accounts of the cosmogony of the yoni-piṭha—in order to outline the intersection of Kaula-Tantra and Purāṇic elements in the formation of the Goddess’s cult at Kāmākhyā.