Chieti University's team in Libya has been mapping and studying the extraordinary patrimony in rupestrian architecture, looking at both funerary and sacred spaces. Particular attention has been paid to the rock-cut sanctuaries in the areas to the east (Ain Hofra/Bu Miliou areas) and to the west (Baggara and Budrag) of Cyrene, which also represent the most problematic zones for looting and vandalism. Therefore, the principal need for these areas has been to plan a project of mapping and recording that is as systematic as possible for this huge patrimony. The resulting data, coming from surveys, non-invasive geo-prospecting, laser scanning of the main monuments, diagnostic mapping of the damaged monuments, as well as from the excavations, have been recorded in a multilayer GIS. In combination with the surveys, a series of excavations have also been organised in several areas in order to have stratigraphic information from sample areas, which have been chosen on the basis of both their typology/monumentality and the degree of risk of damage and looting. These sanctuaries are generally located on the steep slopes of deep canyons, typically associated with water springs, wild landscape, chthonian cults and also, therefore, funerary areas. They are generally monumentalised and emphasised by rock-cut architecture. Among the most interesting finds are the sanctuaries of Budrag and Ain Hofra, with votive inscriptions, rocky altars and shrines. Particularly interesting is the discovery of a rocky high-relief statue of Dionysus, attesting a possible open-air sanctuary in the area of Baggara. It is a unique example of rocky sculpture in Cyrene and it could be one of the best-preserved examples from the Greek world. Distinguishable by their topography, architectonic features and distance from the town, these rocky sanctuaries attest to a reciprocal osmosis between Greco-Roman and Libyan cultural, artistic and ritual elements. The levels of hybridisation and reciprocity vary from case to case and from period to period, suggesting different degrees of Greco-Roman impact, which seem to be, generally speaking, inversely proportional to the distance from Cyrene, giving space and voice to the cults and rites of the local tribes.