Back in the 1920s and 30s, a 120-mile pack trail became one of the most traveled paths in Yellowstone National Park. Unfortunately, in 1970, maintenance of the hiking trail was discontinued, and local ecosystem is being allowed to reclaim the area. Now, Dr. Judith Meyer, associate professor of geography at Missouri State University, and her project partner and husband Dr. Bob Pavlowsky, professor of geography and director of the Ozarks Environmental and Water Resources Institute, are going back to this historic trail to map it digitally and to photograph it as it stands today.