There is plenty of archaeological evidence of Dorset culture settlement in Greenland long before the Vikings arrived there. There are a lot of reasons for the

There is plenty of archaeological evidence of Dorset culture settlement in Greenland long before the Vikings arrived there. There are a lot of reasons for the abandonment of the Greenland colonies, including a changing climate hostile to subsistence farming and domestic squabbles back in Denmark leading to a lack of supply ships (the colonies were not fully self-sustaining). Actual records of the end of the Greenland colonies have not been found and probably won't be because those supply ships that did not get sent out also never returned. The European settlers were later replaced by Inuit migrants, who eked out a maritime existence instead of a pastoral one.