An ancient quarry near Hadrian’s Wall in northern England offers a smutty glimpse into the lives of the Roman soldiers who built the famous fortification. Archaeologists from the U.K.’s Newcastle University and Historic England are working to record the unique inscriptions carved into the walls of the quarry, which provided stone for Hadrian’s Wall. The sandstone inscriptions include a caricature of an officer and a phallus, which denoted good luck in Roman culture. Other carvings at the quarry in Gelt Forest have helped experts date the rare inscriptions. One inscription, for example, describes ‘APRO ET MAXIMO CONSVLIBVS OFICINA MERCATI,’ a...