From audible.com:
A posthumous recipient of the World Fantasy Award for Lifetime Achievement, Marion Zimmer Bradley reinvented - and rejuvenated - the King Arthur mythos with her extraordinary Mists of Avalon series. In this epic work, Bradley follows the arc of the timeless tale from the perspective of its previously marginalized female characters: Celtic priestess Morgaine, Gwenhwyfar, and High Priestess Viviane.