The most remarkable consist of long avenues of menhirs or standing stones; but there is also a profusion of other erections, such as dolmens and barrows, throughout the whole district.
About half a mile to the north-west of the village is the Menec system, which consists of eleven lines, numbers 874 menhirs, and extends a distance of 3376 ft.
These three systems seem once to have formed a continuous series; the menhirs, many of which have been broken up for road-mending and other purposes, have diminished in number by some thousands in modern times.
The origin of the obelisk may be sought in sacred upright stones set up in honour of gods and dead, like the menhirs, and the Semitic Massebahs and bethels.
They range from rude menhirs a few feet high to elaborately sculptured monoliths of too ft.