In the region of Cyrenaica is located the rural sanctuary of Martuba, where two altars and a set of statues have been discovered that have traditionally been linked to the goddess Isis. However, through a comparison with other elements belonging both to the region and to Numidian and Phoenician-Punic areas, as well as Egypt, this paper defends their identification not with the Egyptian divinity, but with the one with which a process of hybridisation or religious bricolage took place at some point prior to Herodotus, the puissance divine called for convenience ‘Luna’ (Moon). This suggests the presence of two intertwined cultural traditions that have contributed to the formation of an innovative and distinct local reality. The resultant cultural artefact is characterised by a synthesis of influences from dominant cultures, such as Roman and Egyptian, while retaining distinctive elements that are unique to the Libyan-Phoenician tradition.