Secret City of WWI

Smithsonian Channel

Saturday 27 June 2020  19:00 - 20:00 (60 mins)
The discovery of an underground city in Northern France, where World War I soldiers took refuge. A historian and photographer attempts to connect the names to their descendants.

Secret City of WWI may be available on Prime Video (affiliate link)
Secret City of WWI (Smithsonian Channel) Saturday 27 June 2020 19:00 - 20:00