Addiction is a condition that results when a person ingests a substance (e.g., alcohol, cocaine, nicotine) or engages in an activity (e.g., gambling, sex, shopping) that can be pleasurable but the continuation of which becomes compulsive and interferes with ordinary responsibilities and concerns, such as work, relationships, or health.
The Appalachian Trail was completed in 1937 after more than a decade of work, although improvements and changes continue. It is maintained by 31 trail clubs and multiple partnerships, and managed by the National Park Service, United States Forest Service, and the nonprofit Appalachian Trail Conservancy.
The master-mind behind this was Benton MacKaye, who proposed the idea in 1921. With the help of countless volunteers, it became a success in 1937, and it is still known today as one of the most popular trails in the world. Running through 14 different states at 2,179 miles long, the Appalachian Trail is the nation's longest marked trail! It goes through several National Forests, National Parks and State Parks. The lowest elevation along the trail is near the Trailside Museum and Zoo at Bear Mountain in New York at 124 feet. The highest elevation stands at 6,625 feet in Tennessee on Clingman's Dome.