The dataset is comprised of the polygon features representing the spatial extent and boundaries of the Bureau of Land Management (BLM) National Landscape Conservation System (NLCS) National Scenic and Historic Trail Corridors and the polylines for the BLM NLCS National Scenic and Historic Trails.In June 2000, the BLM responded to growing concern over the loss of open space by creating the NLCS. The NLCS brings into a single system some of the BLM's premier designations. The National Scenic and Historic Trails are one of these eleven premier designations. By putting these lands into an organized system, the BLM hopes to increase public awareness of these areas' scientific, cultural, educational, ecological and other values. This NLCS data standard assists in the management of all eleven designations within the NLCS. Particularly, NLCS data pertains to the following BLM groups and their purposes: Land Use Planners, GIS Specialists, NLCS team leads, BLM managers, and public stakeholder groups.National Historic Trails are extended trails that closely follow a historic trail or route of travel of national significance. Designation identifies and protects historic routes, historic remnants, and artifacts for public use and enjoyment. The BLM is responsible for over 5,343 miles of 11 National Historic Trails. National Scenic Trails provide maximum outdoor recreation potential and for the conservation and enjoyment of the various qualities – scenic, historical, natural, and cultural – of the areas they pass through. The BLM is responsible for over 668 miles of the Continental Divide, Pacific Crest, Potomac Heritage, Arizona, and Pacific Northwest National Scenic Trails.