Monte da Foz 1 (Benavente, Portugal) is an open-air site identified during a surface work and it was partly excavated by a rescue excavation that took place during the construction of the A10 - Highway. The excavation took place in different areas affected by the highway. The five soundings of one of those areas, the squares B10-B14, allowed the observation of a secure and preserved archaeological context. The present text is the result of the full study of the archaeological data from this archaeological level, framing it, chrono-culturally, in the evolutionary dynamics resulting from the Neolithisation process in the current portuguese territory. The absence of eco-facts in the archaeological record didn’t allow the obtaining of absolute chronology. By this fact, chronological definition was gained according to techno-typological analysis of the material culture, and by the characterization of the typology and functional strategy of the human occupation. The settlement seems to fit in a typology of contexts, culturally related to the early phases of the neolithisation process, more common in the current portuguese territory, the establishments of short duration. The major presence of undecorated pottery, the significant weight of ceramic containers decorated with an incised line below the rim, the preference for a macroindustry of flakes and borers, using local raw materials (quartzite and quartz), the existence of a flint laminary industry, which brought out an interesting number of blades, bladelets and geometric armatures represented by segments and trapezes, combined with the a short duration occupation strategy, puts, crono-culturaly, the range of occupation for Monte da Foz, during the late phases of the early Neolithic, in transition to the middle Neolithic. These data suggests a settlement occupied between the 2nd half of the Vth millennium and the beginnings of the IVth millennium BC. According to the material culture, the group that occupied the Monte da Foz 1 would be, economically and socially, connected with the interaction modalities, between the Man and Environment that characterize the neolithisation process in progress, within an overall framework of rupture compared to the Mesolithic.