The later Neolithic henges are a distinctive yet enigmatic class of monument. Taken as indicative of the emerging social complexity of the third millennium BC, they are often seen as the culmination of cultural achievement during this period. Yet little is actually known about these monuments -- their origins, the meanings behind their distinctive layout, the activities undertaken within their perimeters, or indeed their significance to later Neolithic society. Drawing on the full range of data available across the British Isles and on anthropological parallels, the author addresses these questions in a book that will be of interest to anyone wishing to understand Neolithic society.