I found this to be an informative book on what ancient sources have to say about Druids (such sources are few and far between) as well as about the cultural context for these sources.  The author's archaeology expertise is clear in the book's emphasis on the remains of monuments and artifacts.  I appreciate the inclusion of a wide range of images, a thorough index, and a substantial 'further reading' list.  Unfortunately, the last section on contemporary Druids is not so great -- contemporary Druidry and its relationship to other traditions/paths is vastly oversimplified and some of the information is incorrect (for instance, the Wiccan Rede is characterized as a central principle of "modern paganism" rather than Wicca in particular, and witchcraft and Wicca are conflated).  Wicca and Druidry are linked together in this final chapter, but with no reference to the relationship between Nichols and Gardner which seems a rather important historical context to omit when discussing these paths sharing 'the wheel of the year.'