In furtherance of the purposes of the Wilderness Act (78 Stat. 890; 16 U.S.C. 1131), certain lands within the Rattlesnake National Recreation Area as designated by this subchapter, which comprise approximately 33,000 acres as generally depicted as the “Rattlesnake Wilderness” on a map entitled “Rattlesnake National Recreation Area and Wilderness—Proposed”, and dated

Subject to valid existing rights, the Rattle­snake Wilderness as designated by this subchapter shall be administered by the Secretary of Agriculture, hereafter referred to as the Secretary, in accordance with the provisions of the Wilderness Act [16 U.S.C. 1131 et seq.] governing areas designated by that Act as wilderness: Provided, That any reference in such provisions to the effective date of the Wilderness Act shall be deemed to be a reference to the effective date of this subchapter.