Article L2542-7 of the French General Code of Local Authorities
The mayor may prescribe: 1° To close or fill in quarries, clay pits, sand pits, ballast pits, marl pits, lime pits, clay pits, mine shafts, excavation holes or holes resulting from the uprooting of stumps; 2° To mark with visible signs, to prevent their approach, holes made in the ice in places indicated by the authority.