The Board of Supervisors finds and declares that the unauthorized climbing upon towers and the unauthorized climbing upon towers for the purpose of parachuting, jumping, sailing or otherwise floating off said towers, are dangerous and destructive activities. The Board further finds and declares that the unauthorized use of towers encourages lawlessness and recklessness and that the prohibition against the unauthorized climbing upon the towers and the unauthorized parachuting, jumping, sailing or otherwise floating off said towers will aid in the prevention of avoidable injuries and the possible loss of life to persons engaged in said activities, and will prevent the destruction of private property and the violation of private property rights.
(SCC 621 § 1, 1985)