Leave No Trace: Vanishing Within the Great Smoky Mountains A MUST READ for anybody who enjoys true crime, mystery and disappearances. What happened to Dennis Martin and Trenny Gibson? The author, a retired law enforcement veteran with 32 years of investigative experience and an avid long-distance hiker, meticulously examines both cases. Dennis vanished in 1969 during a family outing along the Appalachian Trail/Spence Field area, while Trenny disappeared seven years later in 1976, from the Forney Ridge Trail during a school field trip. Despite extensive searches, neither have been found, and their fates remain unknown. Drawing on his extensive hiking and investigative background , the author analyzes factual reports from Great Smoky Mountain Rangers, the FBI, and other law enforcement agencies to arrive and offer plausible explanations for their disappearances. Much hearsay has been disseminated using words like "I heard...", "I think...", "Supposedly...", or “Maybe…” Not much in the line of facts and far too much hearsay. This book sheds light and the facts which come from actual documented reports, which are included inside. Furthermore, the author has hiked on both trails numerous times, in addition to having hiked most of the trail systems within the Great Smoky Mountains National Park, hiking for pleasure. Included are personally taken pictures of the sites over the years during his regular hikes. Many people have not been in the deep back country, except through pictures or Google Maps. The author combines both his unique advanced hiking skills and law enforcement investigative experience, in addition to using personal photography and maps, to take you to the exact area where both Dennis and Trenny disappeared from, and the surrounding mountains and forests. This book will make you feel like you are there, in 1969 and 1976. What happened to Dennis and Trenny