Celtiberian hillforts / Castros celtiberos.

[Don Quijote]

It's the old version where Celts were seen as arrived lately (very late BA/IA) in Western Europe. Other theories suppose they were already in West since BA, not only the theory 'Celts of West' by Koch.

I agree with you Moesan. But the explanation on that video is great.

 

[MOESAN]

It's the old version where Celts were seen as arrived lately (very late BA/IA) in Western Europe. Other theories suppose they were already in West since BA, not only the theory 'Celts of West' by Koch.

There appears to have been Urnfield, Hallstatt, and La tene waves that all contributed to the Celticization of their respective areas.

I think Celtiberian language came from the Urnfield wave into Iberia, while Gaulish (or more properly Proto-Gallo-Brythonic?) came from Hallstatt Southern Germany. La Tene were the Northern peripheries of the Hallstatt Gauls who received some additional Scytho/Cimmerian cultural influence etc...

OK. But it doesn't say us where the very core of proto-Celtic>Celtic took place. I think the gravity center was more West than Southern Germany or rather encompassed South Germany AND Eastern future Gaul and that the moves you cite occurred later after some attractivity from more East which produced diverse cultural impregnations (Unetice, W. Urnfields and so on). The LBA/IA changes are maybe for the most backwards moves.