The Cave Regions of the Ozarks and Black Hills, a book written by Luella Agnes Owen, explores the fascinating and mysterious world of caves in these unique natural regions. The author describes in detail the formation of caves, their geology and unique reliefs, and also reveals the history of research in the cave region. Each page of the book reveals to the reader fascinating facts about the most interesting caves in the Ozark Mountains and the Black Hills, deepening the understanding of the uniqueness of these natural formations. This book will be an indispensable source of knowledge for anyone interested in geology, speleology, and nature in the United States.