; and (2) shall reserve to the United States the right to collect rent and royalty payments on the lease referred to in paragraph (1) for the duration of the lease. (c) Existing boundaries The conveyance under subsection (a) does not modify the exterior boundary of the White River National Forest or the boundaries of sections 18 and 19 of T. 7 S., R. 93 W., Sixth Principal Meridian, Colorado, as such boundaries are in effect on the date of the enactment of this Act. (d) Time for conveyance; payment of costs The conveyance directed under subsection (a) shall be completed not later than 180 days after the date of the enactment of this Act. The conveyance shall be without consideration, except that all costs incurred by the Secretary relating to any survey, platting, legal description, or other activities carried out to prepare and issue the patent shall be paid by GLP to the Secretary prior to the land conveyance. 6003. Crags, Colorado land exchange (a) Purposes The purposes of this section are— (1) to authorize, direct, expedite, and facilitate the land exchange set forth herein