Underground City of Naours — One of the Six Chimneys — Éditions des Grottes de Naours

Description

Interior view of an underground gallery with a panel indicating the altitudes and depths of different sections. The reverse mentions the publisher 'Éditions des Grottes de Naours' and specifies that the photograph is genuine. A postmark from Naours (Somme) is affixed, with a cancellation dated 15th here.