[Code of Federal Regulations] [Title 36, Volume 3] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR1002.21] [Page 220] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER X--PRESIDIO TRUST PART 1002--RESOURCE PROTECTION, PUBLIC USE AND RECREATION--Table of Contents Sec. 1002.21 Smoking. (a) The Board may designate a portion of the area administered by the Presidio Trust, or all or a portion of a building, structure or facility as closed to smoking when necessary to protect resources, reduce the risk of fire, or prevent conflicts among visitor use activities. Smoking in an area or location so designated is prohibited. (b) Smoking is prohibited within all caves and caverns.