What is the Holy grail and how did the Grail legends come from France as Arthurian romances. All the answers are in this blog. The Grail is on the Island of Avalon but this is not in Glastonbury. The Grail chapel is clearly indicated on a ley line map given by co-ordinates and measurements in an ancient manuscript written by a monk named Melkin. The Holy Grail is waiting to be uncovered along with the body of Joseph of Arimathea. The Grail romances also confirm the location of this Island