daylighting
n.— «The rationale for not allowing anything to be built within the setback of a culvert on private property, is that some day the culvert should be opened and the creek restored, a process known as “daylighting.”» —“It’s Important to Care About the Creeks Ordinance” by Martha Hamilton Jones Berkeley Daily Planet (California) Feb. 3, 2006. (source: Double-Tongued Dictionary)