Martin Tessmer is a research professor of Instructional Technology at the University of Colorado at Denver, and a travel writer specializing in recreation and outdoor adventure. He has been a regular contributor to Backpacker magazine's "Weekend Wilderness" column and has continued travel articles to newspapers and magazines across the country. He is the author of Weekend Wilderness: California, Oregon, Washington and Explorer's Guide 50 Hikes in Arizona. He lives in Evergreen, Colorado.