Of alignments it is hardly possible to say more than this, that they are usually associated with circles and may have served as avenues to them. The menhirs, sometimes isolated and independent of other ancient remains and sometimes as, for example, at St. Buryan and Drycarn, sufficiently near to circles to suggest association with them, are even less easy to explain. Some of them are of enormous dimensions, like the Men-er-Hroeck at Locmariaquer in Brittany; some are so small as to be liable to be mistaken for the rubbing stones of cattle. The former must have required vast numbers of men to erect, and it is their weight and size which has invested both the smaller and the greater with an interest and importance which would otherwise have been lacking. It is probable that some of them served as boundary stones, some as guide posts, and others as stones of memorial, like those reared by Jacob at Bethel, Joshua at Jordan, and Samuel at Ebenezer. The isolated menhirs of the largest size, i.e. the true menhirs or great undressed stones, reared by human instrumentality, wherever no traces of burial can be found either underneath or near them, undoubtedly suggest a religious purpose. While there is nothing to connect them with nature worship,[13] as commonly understood, or with solar worship, it is difficult to conceive how they came to be erected unless it was either to commemorate a departed chief[14] or to serve as symbols or objects of religion. Reverence paid to the dead, at certain stages of human development, may and probably does imply a belief in life after death. These monuments are of the late neolithic age.
The transition from it to the Bronze Age took place in Europe, according to the best authorities, about 1800 years before Christ. Bronze gave place to iron about 900 years later. The use of bronze in Cornwall, judging from the comparatively small number of bronze implements which have been discovered in the county, and from the fact that for its manufacture both of its constituent metals are abundant, would seem to have been of shorter duration here than elsewhere. Bronze celts have been found in Lelant, St. Just-in-Penwith, St. Hilary, St. Mawgan-in-meneage, Gwinear and in a few other places, but the net result is somewhat disappointing.