This is the story of how Herb and Jan Conn got involved in the exploration and mapping of Jewel Cave when it was just a "small" cave and the subsequent years of bringing Jewel Cave into the realm of a real world class cave.  One of the most enjoyable and easy reading books on caves.  No matter how big the cave gets with current exploration, this book will always be "the" story of Jewel Cave exploration.  Even if you've never met them, you will know Herb and Jan after reading this book. (Cave Books 1981)  238 pages