; (5) contain resources that are listed on, or eligible for inclusion on, the National Register of Historic Places, or have significant cultural, historic, ecological, or scenic value; or (6) are of value for improving Federal land management. (b) Identification of additional management priority areas The Secretary of the Interior may identify additional Management Priorities Areas at any time after the initial identification under subsection (a) is completed. (c) Management Nothing in this section changes the management of an area identified as a Management Priority Area based solely on that identification. (d) Management priority areas excluded from sale or exchange Federal land identified as a Management Priority Area shall be retained in Federal ownership and shall not be available for disposal or conveyance, including by sale or exchange, under this title. 605. Withdrawal (a) Interim withdrawal Subject to valid existing rights and mining claims for which the claim maintenance fee has been paid in the applicable assessment year, effective on the date on which a parcel of land is identified for exchange under section 602 or sale under section 603, that land is withdrawn from— (1) all forms of entry and appropriation under the public land laws; (2) location, entry, and patent under the mining laws; and (3) operation of the mineral and mineral materials leasing laws. (b) Termination of withdrawal The withdrawal of a parcel of land under subsection (a) shall terminate— (1) on the date of sale, or in the case of exchange, the conveyance of title of the land covered by the exchange; (2) with respect to any parcel of land identified for exchange under section 602 or sale under section 603 that is not exchanged or sold, not later than 2 years after the date the parcel of land was offered for exchange or sale under this title