WASHINGTON (Aug. 26, 2020) The foundation of a smokehouse used approximately 150 years ago to cure and smoke meat and fish on the Pretty Prospect plantation, now the grounds of the United States Naval Observatory in Washington D.C. The ruins of the smokehouse were discovered on the site where the new master time clocks and operations facility is being constructed by Naval Facilities Engineering Command (NAVFAC) Washington. (U.S. Navy photo by Matt Stinson)