Updated at 1:45 p.m. ET
The accidental destruction of an ancient tomb in northwest Spain was best summed up by an archaeologist in one perfect, if unintended, pun: "monumental error."
Workers in the town of Cristovo de Cea in the Galicia region mistook what is believed to be a 6,000-year-old Neolithic tomb for a broken stone picnic table and "repaired it."
Lauren Frayer reported from Spain for NPR's newscast: