It was custom to write notes to the deceased and place them into the crevices of a headstone. Some people leave flowers. In time, the paper deteriorated or blew away leaving only the stone and the flowers will also die or blow away. Thus leaving a stone was customary. So now, before leaving the grave site, people place a small stone or flowers on the marker to indicate that they have visited the grave. Personalize your special stones tells love ones you have been there!