Some of this book, especially those chapters dealing with underwater archaeology, deal more with diving in springs and sinkholes rather than in horizontal caves.
Most of the book, however, is devoted to harrowing tales of cave and wannabe cave divers. Many of these stories are woven into what seem, to this long time cave diver, to be the equivalent of fish tales told by fisherman. In other words, the veracity of some of the underwater horror stories may be questionable and are apt to be given to hyperbole. On the other hand, if you have a son, daugther, spouse, significant other, etc. that you don't want to take up this sport, just have them read Burgess' book.
I must admit it is well-written, but borders on a work of fiction rather than being a factual book. It also contains some erroneous information. Its biggest sin, though, appears to be one of omission. This book hardly mentions one of the most fascinating regions of underwataer caves--Florida's Woodville Karst Plain--and the world's most innovative and daring cave divers, those exploring it: Woodville Karst Plain Project.
If you wish to be entertained by macabre tales of a dark water-filled realm, nonetheless, then you will enjoy reading this book.
Jeff Wexler Florida