Section 115710 Of Part 9.5. Abandoned Excavations From California Health And Safety Code >> Division 104. >> Part 9.5.

. The board of supervisors shall order securely fenced, filled, or covered any abandoned mining shaft, pit, or other excavation on unoccupied land in the county whenever it appears to them, by proof submitted, that the excavation is dangerous or unsafe to man or beast. The cost of covering, filling, or fencing is a county charge.