File talk:Celts 800-400BC.PNG
I uploaded this image in May 2005. It should be considered unusable because it is unreferenced. It should either be fixed or deleted. The orange area can be taken as "maximal expansion" per File:Celtic expansion.PNG, no problem there. The green area can be taken as a somewhat inaccurate gesture at "core Hallstatt territory", also shown in File:Celtic expansion.PNG. But I cannot imagine what the yellow blob was supposed to be. It roughly corresponds to the western zone within Hallstatt, see File:Hallstatt culture.png, but there is no reason why this should be highlighted in particular, without highliting the core of the eastern zone as well.