Best Hollow Earth Book?

I was recently told that this is the best book on this topic (a tremendous aggregate of information that is very well compiled with some new information and supporting topics) of the hollow Earth theory. I saw it mentioned on http://www.bibliotecapleyades.net in an article regarding the actual locations of the openings and the author seems to be a very good researcher on the topic with some very well assembled information and conclusions. I was very surprised at some things he mentions regarding solid Biblical and extra-Biblical information.

Can anyone speak for or review this book: http://www.ourhollowearth.com/ourhollo/p2.html