Megalithomania is an annual conference about prehistoric culture held at the Glastonbury Assembly Rooms, Glastonbury in England. It was named after the book by John Michell of the same name and organized by Hugh Newman, Gareth Mills and John Martineau. In late 2005 they concluded that Megaliths were being overlooked at conferences in Britain. They then set about creating the ultimate conference about these ancient sites and brought together a multidisciplinary array of speakers on various aspects of Megalithic science. Notable speakers have included John Michell, Graham Hancock, David Hatcher Childress, Gordon Hillman, Michael Tellinger, John Major Jenkins, Robert Bauval, Robert K. G. Temple and Paul Devereux. Megalithic art is displayed and visits to such locations as Stanton Drew, Stonehenge and Avebury have been organized. This year Megalithomania is also being held om 12 and 13 March 2011 at the Linder Auditorium, Ice Campus, Parktown in Johannesburg, South Africa. It will be held in Glastonbury again on 14 and 15 May 2011. Lectures are often captured on video and distributed around the internet. The latest Megalithomania in South Africa has employed live streaming.

Graham Hancock (born 2 August 1950 in Edinburgh, Scotland) is a British writer and journalist. Hancock specialises in unconventional theories involving ancient civilizations, stone monuments or megaliths, altered states of consciousness, ancient myths and astronomical/astrological data from the past. One of the main themes running through many of his books is the possible global connection with a "mother culture" from which he believes all ancient historical civilizations sprang.

Born in Edinburgh, Scotland, Hancock's formative years were spent in India, where his father worked as a surgeon. Having returned to the UK, he graduated from Durham University in 1973, receiving a First Class Honours degree in Sociology.

As a journalist, Hancock worked for many British papers, such as The Times, The Sunday Times, The Independent, and The Guardian. He was co-editor of New Internationalist magazine from 1976–1979 and East Africa correspondent of The Economist from 1981-1983.

King Arthur is a legendary British leader of the late 5th and early 6th centuries, who, according to medieval histories and romances, led the defence of Britain against Saxon invaders in the early 6th century. The details of Arthur's story are mainly composed of folklore and literary invention, and his historical existence is debated and disputed by modern historians. The sparse historical background of Arthur is gleaned from various sources, including the Annales Cambriae, the Historia Brittonum, and the writings of Gildas. Arthur's name also occurs in early poetic sources such as Y Gododdin.

The legendary Arthur developed as a figure of international interest largely through the popularity of Geoffrey of Monmouth's fanciful and imaginative 12th-century Historia Regum Britanniae (History of the Kings of Britain). Some Welsh and Breton tales and poems relating the story of Arthur date from earlier than this work; in these works, Arthur appears either as a great warrior defending Britain from human and supernatural enemies or as a magical figure of folklore, sometimes associated with the Welsh Otherworld, Annwn. How much of Geoffrey's Historia (completed in 1138) was adapted from such earlier sources, rather than invented by Geoffrey himself, is unknown.