It was a mistake. I have changed it back. If it actually is a bare rock I don’t know. There is a lot of bare rock in this area. All is added with source Lantmäteriet, which is the official Swedish mapping agency. I doubt that this is accurate, though. I can not see so much bare rock on their official maps, but I live far away in Malmö, so I will not make charges I can’t confirm on the areal images.