This book gives lots of information about geography, history, people and personalities of the Unapproachable East. Of special interest were the maps, town descriptions, new monsters, and NPC blocks. Ultimately, I expect a book like this to give me all the basic knowledge currently available about the area in question, plus new details, plus history updates since the last publication - and it fulfilled all these criteria. I found it to be extremely helpful in running my FR campaign: with the wealth of information it contained, I never needed to bring the party beyond the Unapproachable East (barring one journey to the Outer Planes), because it show Rasheman, Thay, Aglarond, etc, to be *really* different from each other.