; or (B) amends or modifies the application of any existing law (including regulations) applicable to land under the jurisdiction of the Secretary. II RECREATION 201. Horse Mountain Special Management Area (a) Establishment Subject to valid existing rights, there is established the Horse Mountain Special Management Area (referred to in this section as the special management area ) comprising approximately 7,399 acres of Federal land administered by the Forest Service in Humboldt County, California, as generally depicted on the map entitled Horse Mountain Special Management Area—Proposed and dated April 13, 2017. (b) Purposes The purpose of the special management area is to enhance the recreational and scenic values of the special management area while conserving the plants, wildlife, and other natural resource values of the area. (c) Management plan (1) In general Not later than 3 years after the date of enactment of this Act and in accordance with paragraph (2), the Secretary shall develop a comprehensive plan for the long-term management of the special management area. (2) Consultation In developing the management plan required under paragraph (1), the Secretary shall consult with— (A) appropriate State, Tribal, and local governmental entities; and (B) members of the public. (3) Additional requirement The management plan required under paragraph (1) shall ensure that recreational use within the special management area does not cause significant adverse impacts on the plants and wildlife of the special management area. (d) Management (1) In general The Secretary shall manage the special management area— (A) in furtherance of the purposes described in subsection (b); and (B) in accordance with— (i) the laws (including regulations) generally applicable to the National Forest System; (ii) this section