; and (B) the Secretary of Agriculture, with respect to public land described in paragraph (11)(B). (16) Surface disturbance The term surface disturbance means any new disruption of soil or vegetation that would require restoration to return the soil or vegetation to natural appearance or ecological function. (17) System The term System means the Tribal Cultural Areas System established by section 5(a). (18) Tribal commission The term Tribal commission means the Tribal commission established for a Tribal cultural area under section 6(a). (19) Tribal cultural area The term Tribal cultural area means a Tribal cultural site that has been designated for inclusion in the System. (20) Tribal cultural site The term Tribal cultural site means— (A) a historic property; and (B) a landform, landscape, or location that— (i) is or may be important to the customs, practices, objects, places, religions, or ceremonies of an Indian Tribe; (ii) is or may be important to an Indian Tribe for the undertaking of religious, cultural, spiritual, traditional subsistence, or other traditional practices; (iii) contains unique or important traditional Tribal food, medicinal, or material gathering areas; or (iv) is connected through features, ceremonies, objects, histories, or cultural practices to other sites or to a larger sacred landscape, as determined by an Indian Tribe. (21) Tribal organization The term Tribal organization has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). 3. Findings Congress finds that— (1) the Federal Government manages more than 640,000,000 acres of public land that was carved out of the ancestral homeland of Indian Tribes; (2) Indians Tribes and members of Indian Tribes— (A) have maintained historical, religious, and spiritual connections to land now designated as public land; (B) continue to exercise treaty rights on public land