article_snippet.sent: Poignant: The names of 9th Battalion Australians' G. Fitzhenry of Paddington, Sydney and Alistair Ross of Lismore are engraved on the walls of the former chalk quarry in Naours, northern France and dated July 1916 .
article_snippet.sent: A direction sign engraved with the names of soldiers who went on to fight at the Somme is seen at the site in Naours, northern France France .
article_snippet.sent: One inscription found in a rough-hewn passage 100 feet underground read: 'James Cockburn 8th Durham L.I.' 
article_snippet.sent: Only the date next to it - April 1, 1917
article_snippet.sent: But those in Naours 'would be one of the highest concentrations of inscriptions on the Western Front' that stretches from Switzerland to the North Sea, said historian Ross Wilson of Chichester University in Britain.
article_snippet.sent: American soldier: This inscription reads 'HA Deanate, 148th Aero Squadron, USA.
article_snippet.sent: 150 Vermilyea Ave, New York City' Looking: Jeffrey Gusky, a photographer and physician from Texas points at graffiti in theformer chalk quarry, in Naours, northern France .