I picked up this book at the visitor center bookstore when visiting Hawai'i Volcanoes National Park but never got around to reading it. Now, years later, I'm very glad I bought the book. Alternately, this book could be titled Everything You Ever Wanted to Know About Volcanoes. It is thorough, comprehensive, extremely "readable," and very engaging. It is also heavily illustrated with maps, drawing, and photographs, some of which are color plates, which helps to make the concepts easier to understand. I have three minor quibbles with the book. First, the authors sometimes get ahead of themselves; they present concepts in one chapter, and then elaborate on the concepts in the next. As a result, when I was read a chapter I was left wondering about details, only to begin the next chapter and say to myself, "Aha! So that's what they were talking about." Second, the captions of some of the figures and maps does not match the language used in the body of the text all the time, so occasionally I was left wondering about how something illustrated related exactly to the description in the text. Third, the book is very serious and straightforward during the first half, but then becomes a bit more relaxed and casual toward the end as if the authors were finally "letting go" a bit. These quibbles do not materially distract from what otherwise is an excellent book.