Meticulously researched with interesting speculation built on that. Markale puts the druids in their specific time, place and people, and maintains that they could only be part of that. Once their Celtic society was Romanized and Christianized there was no place for the druids, despite New Age fantasists and their white robed ceremonies at Stonehenge. The latter had no part of Celtic Druidic society, by the way, but dated from long before the Celts arrived in France, Britain and Ireland. Celtic-Druidic religion was forest-based, and their sanctuaries were in the center of forests, with no buildings or statues or stone circles. A fascinating look at a time and a people long gone, but some of whose ideas still have merit today.