This is a very good book of the caves and cave types of the east edge of Texas Edwards Plateau. The book is well organized, into three parts with photos, diagrams, tables and illustrations to augment the text. Individual cave descriptions start on the southeast and progress to the northwest, well organized.

One unique feature of this book I have not seen anywhere else is a density map of springs and caves of this region, pages 56 and 57. These are detailed maps, not just relative impressions. ( )