Photography by Mike Buchheit

About our Instructors & Guides

Photography by Mike Buchheit

What Makes An Expert?

On our classes, guided hiking trips, and educational tours you’ll learn about the geology and cultural & natural history of this magnificent place from those who know it best: exceptional instructor-guides with decades of experience.

We understand the time, effort, and expense required to travel to this iconic landscape and therefore we hand-pick our instructors from local universities, colleges, art schools, and the educational guiding community to share their deep and personal Canyon-connection with you!

Our expert staff of instructors include:
Professional geologists | Research biologists | Cultural Interpreters | Archaeologists | Historians | River Runners | Artists | Authors | and More

Professional Certifications:
Medical certification as a Wilderness First Responder or an E.M.T.
Certified Interpretive Guide from the National Association for Interpretation

Guides by the numbers


with Masters or PhD degrees


total years of Canyon Guiding Experience


number of professional certifications held


Meet one of our Guides

Marjorie “Slim” Woodruff, PhD

Marjorie “Slim” Woodruff was born in Arizona. Growing up in primeval desert, she became comfortable with things that crawl, sting, bite, and gnaw, which served her well when she started working with adolescents. While attending Northern Arizona University, she spent much of her free time exploring Grand Canyon. After graduation she led backpacking trips, taught cross-country skiing, drove a tour bus, and otherwise participated in outdoor education and recreation.

Slim considers herself a lifelong learner, and employs her time researching Canyon history, anthropology, geology, and natural history. Her writing has appeared in the Grand Canyon anthology On Foot, and in High Country News- Writers on the Range.

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