witch stones

Naturally-holed stones (called mare stones,Odin's stone, hag stones, witch stones,fairy stone or holey stones) are worn to protect from nightmares, the Mara, to bless holy water, to see spirits, and to aid in hedgecrossing and spirit work as well as protect you while doing so.I found this one on the beach.It's also said when you look through the whole you can see fairies.