; (2) the recreational, social, and health benefits people receive from the Federal land through outdoor recreation; and (3) the specific and meaningful experiences made possible by unique and varied landscapes. (b) Definitions In this section: (1) Natural feature The term natural feature means an ecological, geological, hy­dro­log­i­cal, or scenic attribute of a specific area. (2) Remarkable recreational attribute The term remarkable recreational attribute means, with respect to an area— (A) a natural feature that supports high-quality outdoor recreation opportunities and experiences; (B) a unique cultural or historic feature or attribute that supports high-quality recreation opportunities and experiences; (C) the offering of outstanding existing or prospective recreation opportunities and uses; (D) having an important role in, and contributing significantly, to the outdoor recreation economy; and (E) having high fish and wildlife values. (3) Secretary The term Secretary means— (A) the Secretary of the Interior, acting through the Director of the Bureau of Land Management with respect to land administered by the Bureau of Land Management; and (B) the Secretary of Agriculture, acting through the Chief of the Forest Service, with respect to National Forest System land. (4) System The term System means the National Recreation Area System established by subsection (c). (5) System unit The term System unit means a System unit designated pursuant to subsection (c). (c) Composition There is established a National Recreation Area System, to be comprised of— (1) existing National Recreation Areas under the jurisdiction of the Bureau of Land Management or the Forest Service described in subsection (g)