Galgahallarna (translated as gallows stones) are mythical stones with a bloody past. These are two huge boulders about 3-5 metres high, with a gap about a metre wide between them, left here by the melting glacier.
The place is not exactly easy to find, but the difficulty is mainly finding the way back from the forest. You can park for example. here (GPS: 56.584372,14.283352).