Ponyhenge

In 2010 a hobby horse appeared in Lincoln, Ma. about 15 miles west of Boston. Since then, a number of horses of all types - hobby horses, rocking horses, and horse figurines — began appearing at the site. They are periodically rearranged, sometimes in a circle, sometimes in rows like race horses. Other times they are simply scattered and knocked around, as if they’ve come back from a long night of carousing.

And no one knows where they come from or who is doing this.