The Secretary of the Interior, or the Secretary of Agriculture where lands administered by him are involved, may establish and designate national recreation trails, with the consent of the Federal agency, State, or political subdivision having jurisdiction over the lands involved, upon finding that—

As provided in this section, trails within park, forest, and other recreation areas administered by the Secretary of the Interior or the Secretary of Agriculture or in other federally administered areas may be established and designated as “National Recreation Trails” by the appropriate Secretary and, when no Federal land acquisition is involved—

(Pub. L. 90–543, § 4, Oct. 2, 1968, 82 Stat. 919; Pub. L. 98–11, title II, § 204, Mar. 28, 1983, 97 Stat. 43.)