Some anthropologists believe the Basques of Spain have the greatest Neanderthal heritage. The Basques also also have a unique language that is unrelated to other indo-European languages and could be the remnant of a language spoken by Neanderthals.
The last Neanderthals lived in Spain and Gibraltar.
Genetically, Basques are similar to people with Celtic ancestry. Celts are believed to be the first people who inhabited Europe.
graphic source: http://rdos.net
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