The author provides a hypothetical chronological framework for the circles and considers their origins and purpose, examining in particular their possible astronomical function. He then discusses each regional grouping of circles, describing their architectural types and the finds from excavations. Special attention is paid to Stonehenge and Avebury, the two best known and most spectacular rings.
Burl's book is a technical, academic treatment of the stone circles of the British Isles, and while i understood that when I picked it up, I wasn't prepared for how much archaeological, historical, and geographical knowledge
Without the necessary background, I can't comment on the quality of the scholarship, unfortunately, or rate the book; all I can say is that it isn't light reading, and it isn't intended for those with a casual interest in the subject. However, it's quite well written.