The wonderfully named Kithtra’s Krystal Kave has a summary of myths, legends regarding the lost Kingdom of Lyonesse. It is pretty informative and comprehensive, despite showcasing what some less charitable folks might term ‘fringe’ archaeology.

Wikipedia gives its outline on Lyonesse here.

I still contend that Jack Vance’s historical novels are based solidly upon fact and that they accurately reconstruct Hybras as it really was.

Editions Andreas Irle is still offering a beautiful set of these invaluable documents.