In their graves the dead were buried in a crouching attitude, and fresh burials were made as occasion required.

Sometimes the cromlech is double, and occasionally there is a hole in one of the stones, the significance of which is unknown, unless it may have been for the ingress and egress of souls.

Graves of the dolmen or cromlech type are found in all the countries of Western Europe, North Africa, and elsewhere, wherever stone suitable for the purpose abounds, and in this we have a striking illustration of the way in which lines of development in man's material civilisation are sooner or later correlated to his geographical, geological, and other surroundings.

The religious ideas of man in neolithic times also came into correlation with the conditions of his development, and the uninterpreted stone circles and pillars of the world are a standing witness to the religious zeal of a mind that was haunted by stone.

Before proceeding to exemplify this thesis the subsequent trend of Celtic civilisation may be briefly sketched.
Through the pacific intercourse of commerce, bronze weapons and implements began to find their way, about 2000 B.C.or earlier, from Central and Southern Europe into Gaul, and thence into Britain.