David C. (xcom) - , reviewed Jewel Cave Adventure: Fifty Miles of Discovery in South Dakota on + 29 more book reviews
This book provided a very detailed and adventurous account of the exploration of a very large cave in South Dakota by two rock climbers turned spelunkers. At the time of publish of this book the cave had 66 miles of mapped passage but since then it is now the worlds second largest cave at over 150 miles. This book also contains maps of passages and many many black and white pictures inside the cave. I recommend this to anyone who enjoys the underground!
