Downcanyon: A Naturalist Explores the Colorado River Through the Grand Canyon

You'll learn everything you ever wanted to know about the insect life on the Colorado River in the Grand Canyon, and I mean that in a good way. She's a lovely writer, too, with an easy-to-read but eloquent style. If you've never been, you'll want to go; if you have, you'll want to go back.

As was written by the copy editor to introduce the foreword by Ms. Zwinger to my recently published book "Deep Immersion: Thoreau's Engagement with Water" (Green Frigate Books): "Few have ever been so 'haunted by waters' - to use Norman Maclean's wonderful phrase - as has naturalist and 'water logged' nature writer Ann Haymond Zwinger." This particlar book, like all of her works, very much offers a deep well for thirsty minds.

Ann Haymond Zwinger has contributed her scientific expertise to subsidized, multi-week inner-canyon environmental impact expeditions, has run each of the Canyon's rapids countless times (in nearly each month of the year), in every sort of water craft. What her scientific eye takes in, her pen transmutes into its own river of irresistible prose, carrying the reader, willing or not, from one chapter to the next. As a hiker, I expected the vision of a "boat person" to suffer from its constricted horizons. A bottom-up myopia. Instead, we find ourselves soaring with eagles. We climb cliffs, clawing our way through a darkness of thorns and pain. We crawl along brushy beaver tunnels. We ponder the local history and lore...and the primeval past. Our journey evokes visions of thousand foot-high lava dams filling the entire Canyon with water, as well as today's horror of a rapid at Lava Falls. While some of her snippets of local human history are rarely mentioned in other books about the Canyon, Zwinger's forte is in the natural sciences. In that arena, she has no peer among Grand Canyon authors. Since this is not a trail manual, it is not easy to restrict one's reading to a single, specific Canyon location. Rather, the chapters are organized by seasons of the year. No matter. If you start at the beginning, its 220 or so pages of narrative will sweep you into their main current and, well... I'll see you below the rapids.