California Code, Penal Code - PEN § 25550

(a) Section 25400 does not apply to, or affect, the transportation of a firearm by a person when going directly to, or coming directly from, a lawful camping activity for the purpose of having that firearm available for lawful personal protection while at the lawful campsite.

(b) This section shall not be construed to override the statutory authority granted to the Department of Parks and Recreation or any other state or local governmental agencies to promulgate rules and regulations governing the administration of parks and campgrounds.