EXPANSION OF THE MONUMENT.

SEC. 104. EXPANSION OF THE MONUMENT. (a) Upon the execution of a binding agreement between the Secretary, the State, and the city that the lands identified in this subsection shall be perpetually managed in accordance with section 105, the Secretary shall include such lands, totaling approximately 1,994 acres, within the monument boundary. The lands referred to in this subsection are: (1) the approximately 1,779 acres generally known as the Piedras Marcadas Unit, as depicted on the map referred to in section 102(a); and (2) the approximately 215 acres generally known as the Boca Negra Unit, as depicted on the map referred to in section 102(a). (b) (1) The Secretary is authorized to acquire, as provided in section 103(a), some or all of the approximately 95 acres of land, or interests therein, within the area identified as “Potential Addition” on the map referred to in section 102(a), if, after consultation with the Petroglyph National Monument Advisory Commission established under section 110, the Secretary determines that such acquisition would further the purposes of this title. (2) The authority of the Secretary to make acquisitions pursuant to paragraph (1) shall expire on the date three years after the date of enactment of this Act. (3) Any lands acquired pursuant to paragraph (1) shall be incorporated into the monument and managed accordingly.