This is one of the best resources for a game world that I have read, to date. There is an excellent volume of information about almost everywhere on the continent that you would like to set up a campaign. I also must prefix what I am saying about this book by saying that I am a huge Scarred Lands fan, but I also must say that I would not be such a huge fan if it were not for the quality of writing and ideas that made up this book and the rest of the series.
There is ample information in here even for the most casual DM/Player/Fan of the Scarred Lands, to easily start making up their own campaign ideas, just from reading about the different countries of Ghelspad and their major cities. From the evil lands of the Dunahnae in the west, the last stronghold of the evil Charduni dwarves, to the shining home of the world's paladins, Mithril, there is something in here for everyone.
I also enjoyed the addition of some new "Scarred Lands" prestige classes. A personal favorite of mine is the world specific presitge classes. I feel it adds a lot to the game and allows your players to connect themselves to the world better and get more out of it.
All I can continue to say about this book is that, since this is only but ONE continent out of five in the Scarred Lands, I can not wait to read the Campaign Setting for the next continent, Termana.