Sword in the stone - Mysterious Skånsta Stone

This stone was found sin Skånsta Åkersberga Sweden, by my father-in-law in the 50-ies. He at that time was a farmer on the farm called Norrgården, Skånsta. Probably the stone is from the iron age beeing used to sharpen swords and arrow heads. The hole is about 10 times 4 cm, and 10 cm deep. It is not covered but lying totally ouvert for everyone to see right beside a pathway very near some villas and a kids football arena.

/brw