Dol is situated in the north of the departement of Ille-et-Vilaine, not far from the sea-coast. Near it, in a field called the Champ Dolent ('Field of Woe'), stands a gigantic menhir, about thirty feet high and said to measure fifteen more underground.

It is composed of grey granite, and is surmounted by a cross . The early Christian missionaries, finding it impossible to wean the people from frequenting pagan neighbourhoods, surmounted the standing stones with the symbol of their faith, and this in time brought about the result desired.

A strange legend is connected with this menhir. On a day in the dark, uncharted past of Brittany a fierce battle was fought in the Champ Dolent. Blood ran in streams, sufficient, says the tale, to turn a millwheel in the neighbourhood of the battle-field. When the combat was at its height two brothers met and grappled in fratricidal strife. But ere they could harm one another the great granite shaft which now looms above the field rose up between them and separated them.