The last time I read this book it was well over 15 years ago and it was in school. The topic was about a city that had been laid waste to as in a possible post apocalyptic circumstance. Humans have basically started over and they believe this city to be some sort of God like city and the people are forbidden to cross over into it. The book basically ends with I believe what was a young adult/teenager going to the city and finding out that it was actually humans that had caused all of this. This is about all the information that I can remember off the top of my head.