Yeah, they've been there for how long?
The Iceland Experiment
How a Tiny Island Nation Captured the Lead in the Genetic Revolution
The island nation is a genetic anomaly: settled by a few Norsemen and Celts in the 9th century A.D. and relatively free of later immigration, it is among the most genetically homogeneous countries on earth.
They are even making a scientific business based on their European DNA vs the rest of the world's decedents of the same racial identity.