The author is a long-time river rat, having been whitewater boating for over 35 years. His rafting "resume" includes most of the classic rafting (and some obscure) runs in Oregon, Washington, Idaho, and California as well as internationally in Canada, Peru, Guatemala, and Ecuador. In Mexico, he has run many rivers in the states of Veracruz, Chiapas, and Oaxaca. His latest passion is exploring the rivers of northern Mexico in the states of Sonora and Chihuahua. The last five years exploring this region are what led to this book. Having run all the rivers described here, some multiple times, Neil wants to share this knowledge and encourage others to explore the rivers of the Yaqui drainage. This is a beautiful and fascinating region with quality whitewater that almost no one knows about.