Last Pre-Historic Hunter-Gatherer Cultures Of Europe

Does anyone know which pre-historic hunter-gatherer cultures were the very last ones to survive in Europe? I have a feeling they were from the Baltic region but maybe Northern Russia and Iberia also had some very late hunter-gatherer groups hold on for a long time. Some examples of late European hunter-gatherer cultures are the Pitted Ware Culture and the Narva culture.

http://en.wikipedia.org/wiki/Pitted_Ware_culture

http://en.wikipedia.org/wiki/Narva_culture

Now in looking at true Pre-Historic cultures (non-Sami) it looks like three cultures stand out as possibly being the very last hunter-gatherer cultures that were present in Europe.

1.) Narva culture
2.) Pit-Comb Ware culture (Comb-Ceramic culture)
3.) Pitted Ware culture

http://en.wikipedia.org/wiki/Narva_culture
http://en.wikipedia.org/wiki/Pit%E2%...b_Ware_culture
http://en.wikipedia.org/wiki/Pitted_Ware_culture

Thoughts?