A great conclusion to a great series. I can not say much in order to have people who read this review enjoy the act of discovery.

A war that has been raging for 40,000 years still rages. Are you on the Right side? Your sons are dead. Will they be avenged? Your 10-year-old daughter has joined the forces of the enemy. Can you rescue her? Your world has been split in two by a volcano that your mentor created that reaches from the sea on the east, to the sea on the west. Can you close the rift? And you are slowly turning into stone.

I can not recommend this book more highly.