WASHINGTON (Aug. 26, 2020) The foundation of a standpipe built circa 1892 during the construction of the new Washington Naval Observatory in preparation for its move from Foggy Bottom. A standpipe is a metallic tank, usually of cylindrical form, with a flat bottom resting directly upon a masonry or sand foundation and used for the storage of liquids, in this case, water. The foundation was discovered by Naval Facilities Engineering Command (NAVFAC) Washington experts during the construction of the new master time clocks operations facility at the United States Naval Observatory. (U.S. Navy photo by Matt Stinson)