Any property under the management and control of the parks division and not open for public use shall be defined as undeveloped park property. It shall be unlawful for any person to enter onto or remain on any posted undeveloped park property without prior approval of a parks employee. (Added by Ord. 86-001 § 2, Feb. 12, 1986; Amended by Ord. 93-066, Aug. 18, 1993, Eff date Aug. 28, 1993).