The Rö Runestone stands in the parish of Rö, a few kilometres south of Grebbestad, and is one of the oldest inscribed runestones in Sweden. It dates from the Migration Period — roughly the 4th or 5th century CE — predating the Viking Age by several centuries, and the runic inscription it carries is in an archaic form of Proto-Norse.
The stone stands in a field, freely accessible. It is not spectacular to look at — a modest standing stone with weathered carvings — but its age and the continuity it represents, standing in the same landscape where it was placed 1,500 years ago, give it a particular quality. The combination with the Greby grave field a few kilometres away makes the area around Grebbestad one of the more concentrated patches of prehistoric heritage on the Swedish coast.