The Year the Horses Came

From the author's website: "Volume One of The Earthsong Series evokes the moment in prehistory when marauding nomads brought horses, male gods, and war to a Goddess-worshipping Europe that had known peace for thousands of years. Against this perilous backdrop, a passionate, dangerous love develops between Marrah, a gifted priestess who defends her people against the nomads, and Stavan, one of the invading warriors."