Ken Walters has been backpacking, climbing, and skiing throughout western North America since 1961; teaching skiing and wilderness camping since 1977; and leading trips for the Grand Canyon Field Institute since its inception in 1993. Within Grand Canyon, he has hiked more than eleven thousand miles and climbed 141 buttes. With an M.S. in geology, he worked as an exploration geologist in Montana and Wyoming. Ken taught commercial photography at Northern Arizona University for twelve years, and outdoor and wildlife photography in Yellowstone National Park. Ken is also a Leave No Trace Master Trainer.