; and (B) the establishment of temporary roads. (d) Mechanized vehicles, pedestrians, and horse travel Nothing in this section prohibits— (1) the use of mechanized vehicles, access by pedestrians, or horse travel within the recreation area; or (2) the construction of trails for use by mechanized vehicles, pedestrians, and horse travel within the recreation area. (e) Wildfire, insect, and disease management In accordance with this section, the Secretary may take any measures in the recreation area that the Secretary determines to be necessary to control fire, insects, and diseases, including, as the Secretary determines to be appropriate, the coordination of those activities with a State or local agency. (f) Withdrawal Subject to valid existing rights, the recreation area (including any Federal land acquired after the date of enactment of this Act for inclusion in the recreation area) is withdrawn from all forms of— (1) entry, appropriation, or disposal under the public land laws; (2) location, entry, and patent under the mining laws; and (3) disposition under all laws pertaining to mineral and geothermal leasing or mineral materials. 203. Trail-based recreation (a) Definition of collaboratively developed In this section, the term collaboratively developed means a proposal that is developed and implemented through a collaborative process that— (1) includes multiple interested persons representing diverse interests; and (2) is transparent and nonexclusive. (b) Expanded trail recreation opportunities (1) In general If a local collaborative group submits to the Secretary, by not later than 5 years after the date of enactment of this Act, a collaboratively developed proposal to improve motorized and nonmotorized recreational trail opportunities within the District, the Secretary— (A) shall analyze the proposal in accordance with the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq.)