A military structure designated B-6/51/E located near Prague, Czechia. The specific purpose, historical context, and current condition of this site are not confirmed by the available information. The designation suggests a possible Cold War-era military or civil defense facility, consistent with the region's history of Warsaw Pact fortifications, but no direct evidence links this specific code to a known bunker type, construction date, or function.
Further local historical or archival research would be required to verify its identity and significance.