16 U.S.C. § 403h-11
The Secretary of the Interior is authorized to accept, on behalf of the United States, donations of land and interests in land in the State of Tennessee for the construction of a scenic parkway to be located generally parallel to the boundary of the Great Smoky Mountains National Park and connecting with the park, in order to provide an appropriate view of the park from the Tennessee side. The right-of-way to be acquired for the parkway shall be of such width as to comprise an average of one hundred and twenty-five acres per mile for its entire length. The title to real property acquired pursuant to this section shall be satisfactory to the Secretary of the Interior. All property acquired pursuant to this section shall become a part of the Great Smoky Mountains National Park upon acceptance of title thereto by the Secretary, and shall be subject to all laws, rules, and regulations applicable thereto.
16 U.S.C. § 403h-11