Secret City of WWI

Smithsonian Channel

Thursday 28 April 2022  23:30 - 00:30 (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 (Smithsonian Channel) Thursday 28 April 2022 23:30 - 00:30