We took all the geological jargon and made this easy to read guide for anyone wanting to rockhound on the Yellowstone River. Then, we found all the best minerals from the Paradise Valley to the North Dakota border and put them in one book. No matter what your prospecting skill level, this guide will help you unlock the unique gem, mineral, and fossil treasures of the Yellowstone River. This book is packed with maps and high quality pictures. The minerals pictured in this book were all collected my hobbyist and professional prospectors. We want to encourage everyone to get out and see what amazing adventures lay ahead.