On a hill in a tranquil pine forest 18 km outside Rauma lies a UNESCO enlisted Bronze Age burial site. It dates back more than 3,000 years, to 1,500 to 500 BC, and includes 36 granite burial cairns spread out into 6 main groups. A walk among them will be about 2 km long. The structures vary from stone circles and stone cists to dry stone walls. Originally, it was near the coast of the Gulf of Bothnia, but the land has risen so it is now 15 kilometers from the sea.