In this paper, we deal with the locational analysis of the Cova Eirós site (Triacastela, Lugo), occupied from the Middle Palaeolithic to the present. From GIS and statistics, we intend to approach those environmental factors that define its importance as a place of occupation over time and on a recurring basis. Once we have analysed the variables that characterize the site’s patterns of use, we have verified that Cova Eirós is an important, prominent and strategic point. The place is very close to the potential transit routes and has great visibility. It is also protected and set on a steep slope. Moreover, the site has hunting resources and raw materials sources nearby. So it is a settlement that presents ideal living conditions for hunter-gatherer groups.