The Roman presence in high mountainous areas has traditionally been considered marginal, but recent archaeological studies in several European regions have reshaped our understanding of the occupation and exploitation of these regions. Archaeological research conducted in the Cerdanya valley shows this to be the case in the eastern Pyrenees. The discovery and excavation of several indigenous settlements have allowed us to document an earlier and more intensive Roman presence there, attested by military activity and the exploitation of the area's resources. The site of Tossal de Baltarga (Lleida), where a group of Roman seal-rings was recovered, offers a window into this situation.