A four-kilometre stretch of polished red rapakivi granite running flat into the Bothnian Sea, Rotsidan is the most photographed shoreline on the High Coast. Centuries of waves and ice have polished the rock smooth, and on a sunny day in summer you can walk barefoot for kilometres, swim from the warm slabs into the cold sea, and find a sheltered cove for a picnic.
The path along the shore is part of the High Coast Trail (Höga Kusten-leden). There are picnic shelters and a few rough toilets at the trailhead. Bring water. The coast is at its best in late June and July when the sun is up almost round the clock.