The rescue excavation of the antique sanctuary of Sains-du-Nord (Nord) allowed the realization of three archaeo-environmental studies (anthracology ; archaeozoology ; pedology). They each brought elements contributing to a better understanding of the site. So, for the main part, the anthracological study allowed to observe the diversity of the exploited woodland ; the archaeozoological study authorized the establishment of comparisons with other sanctuaries of the north of Gaul ; as for the pedological study, highlighted the absence of anthropogenic pollution on the site, and the punctual presence of various types of arrangements of the occupation level.