; and (4) pays all costs of any survey conducted under paragraph (3). (b) Availability of lower sonoran lands map Not later than 180 days after the Lower Sonoran Lands are taken into trust under subsection (a), the map shall be on file and available for public inspection in the appropriate offices of the Secretary. (c) Lands taken into trust as part of reservation After the date on which the Lower Sonoran Lands are taken into trust under subsection (a), those lands shall be treated as part of the Reservation. (d) Gaming Class II and class III gaming under the Indian Gaming Regulatory Act ( 25 U.S.C. 2701 et seq.) shall not be allowed at any time on the land taken into trust under subsection (a). (e) Description Not later than 180 days after the date of enactment of this Act, the Secretary shall cause the full metes-and-bounds description of the Lower Sonoran Lands to be published in the Federal Register. The description shall, on publication, constitute the official description of the Lower Sonoran Lands. 6. Establishment of fixed northern boundary (a) In general The Northern boundary of the Reservation created by the Executive Order is hereby modified in accordance with this section and shall be fixed, permanent, and not ambulatory. (b) Modification of north boundary That portion of the Reservation boundary created by the Executive Order as along the middle of the Salt River shall be modified to be a fixed and permanent boundary as established by the Harrington Survey of the north boundary of the Reservation, as shown on the plat and described in the field notes. (c) Resurvey and marking Subject to available appropriations, the Secretary shall ensure that the modified Reservation boundary as described in subsection (b) is surveyed and clearly marked in conformance with the public system of surveys. (d) Effect The Reservation boundary as modified and resurveyed by subsections (b) and (c) shall become the north boundary of the Reservation in all respects and upon all the same terms as if such lands had been