excavation
ex.ca.va.tion \.ek-sk*-'va--sh*n\ n 1: the act or process of excavating 2: a cavity formed by cutting, digging, or scooping
ex.ca.va.tion \.ek-sk*-'va--sh*n\ n 1: the act or process of excavating 2: a cavity formed by cutting, digging, or scooping