The specific nature of the remains and of the cultural practices observed during the excavation of the Gallo-Roman sanctuary of Blicquy “Ville d’Anderlech” (Hainaut, Belgium) raised a number of questions. As early as the 1990’s, it appeared necessary to adopt a specific procedure in order to deal with the various problematics. Multidisciplinary approaches ensure a better understanding not only of cultural remains, but also of the ritual gestures associated with them. Thus it was possible to determine three ritual “episodes” belonging to successive periods between the end of the Iron Age and the beginning of Romanization: the creation of a burial area (Late La Tène C2/D1), a human deposit of La Tène D1b/D2 as a foundation rite, and a non-typical cultual wood alongside a first cella. The latter provides unique material evidence which can probably be linked to the tradition of sacred groves as described by classical authors. Traduction : Margaret & Jean-louis CADOUX.