In addition to Gauls infiltrating from the north of the Pyrenees, the Roman and Greek sources mention Celtic populations in three parts of the Iberian Peninsula: the eastern part of the Meseta (inhabited by the Celtiberians), the southwest (Celtici, in modern-day Alentejo) and the northwest (Gallaecia and Asturias). A modern scholarly review found several archaeological groups of Celts in Spain: The Celtiberian group in the Upper-Douro Upper-Tagus Upper-Jalón area. Archaeological data suggest a continuity at least from the 6th century BC. In this early period, the Celtiberians inhabited in hill-forts (Castros). Around the end of the 3rd century BC, Celtiberians adopted more urban ways of life. From the 2nd century BC, they minted coins and wrote inscriptions using the Celtiberian script. These inscriptions make the Celtiberian Language the only Hispano-Celtic language classified as Celtic with unanimous agreement. In the late period, before the Roman Conquest, both archaeological evidence and Roman sources suggest that the Celtiberians were expanding into different areas in the Peninsula (e.g. Celtic Baeturia). The Vetton group in the western Meseta, between the Tormes, Douro and Tagus Rivers. They were characterised by the production of Verracos, sculptures of bulls and pigs carved in granite. The Vaccean group in the central Douro valley. They were mentioned by Roman sources already in the 220 BC. Some of their funerary rituals suggest strong influences from their Celtiberian neighbours.
In addition to Gauls infiltrating from the north of the Pyrenees, the Roman and Greek sources mention Celtic populations in three parts of the Iberian Peninsula: the eastern part of the Meseta (inhabited by the Celtiberians), the southwest (Celtici, in modern-day Alentejo) and the northwest (Gallaecia and Asturias). A modern scholarly review found several archaeological groups of Celts in Spain: The Celtiberian group in the Upper-Douro Upper-Tagus Upper-Jalón area. Archaeological data suggest a continuity at least from the 6th century BC. In this early period, the Celtiberians inhabited in hill-forts (Castros). Around the end of the 3rd century BC, Celtiberians adopted more urban ways of life. From the 2nd century BC, they minted coins and wrote inscriptions using the Celtiberian script. These inscriptions make the Celtiberian Language the only Hispano-Celtic language classified as Celtic with unanimous agreement. In the late period, before the Roman Conquest, both archaeological evidence and Roman sources suggest that the Celtiberians were expanding into different areas in the Peninsula (e.g. Celtic Baeturia). The Vetton group in the western Meseta, between the Tormes, Douro and Tagus Rivers. They were characterised by the production of Verracos, sculptures of bulls and pigs carved in granite. The Vaccean group in the central Douro valley. They were mentioned by Roman sources already in the 220 BC. Some of their funerary rituals suggest strong influences from their Celtiberian neighbours.