Carved Stone 8 in Gavrinis Dolmen passage grave, Gulf of Morbihan Larmor-Baden, Morbihan, France. Cairn de Gavrinis Passage Grave, the largest and most decorated tomb in Neolithic Europe with 29 six-foot-high menhirs carved with labyrinthine fingerprints. This sanctuary/tomb/shrine was used by the same family for hundreds of years.