The Penny Hedge is an old custom in Whitby, whereby on the Day of Ascension a rickety 'hedge' is built into the sand of the East side of Whitby. It has to withstand three tides from the sea, and is called a horngarth. The folklore rests on the story in 1159 of three nobles chasing a boar which subsequently gained the protection of a chapel and then died. The monk in the chapel stopped the hounds going in and for this he was beaten up by the nobles and died, but not before he asked for their release from punishment from the Abbot. This was granted and their task and the task of their future families was to build this hedge.
The whole story is told in this article from Whitby Museum and there are many interpretations as to what the hedge was for.
And whilst in the Whitby Museum have you ever met the Hand of Glory. A grisly keepsake used by burglars to gain entrance to your house and then keep you motionless as they burgled your house. I won't even show you a photo of the horrible thing ;)