Colin Richards is Professor of Archaeology at the University of the Highlands and Islands in Scotland. He is a leading expert on stone circles and has excavated widely on Neolithic sites in Britain as well as on Easter Island and elsewhere in the Pacific. For many years he has been researching the Neolithic period in Orkney, where he is now based. His books include Dwelling among the Monuments, Building the Great Stone Circles of the North and The Development of Neolithic House Societies in Orkney.