The object of this guide is to help visitors to understand, and to enjoy, the ancient monuments of Wales - particularly those which are maintained by the State and so normally accessible to the public.

Preface.

In a general view, the land mass occupied by Wales, as historically defined, is marked off clearly enough from the adjoining parts of Britain by its character as an upland region, formed mainly of relatively ancient rocks and sharing many characteristics with parts of Scotland, northern England and the West Country, which together constitute the 'Highland Zone', stretching down the western side of Britain.

Prehistory. The physical background.