This comprehensive A to Z of ancient and modern mysteries answers many of the questions that have puzzled us over the years. The dictionary explains:

* why stone circles were built and what they were used for

* where ley lines are sited and how they affect us

* the significance of the Green Man

* who King Arthur actually was

* the ancient fire festivals

* how earthlights appear

Janet and Colin Bord have written numerous books on earth mysteries, including 'Mysterious Britain' and 'The Enchanted Land', also published by Thorsons.