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Black and white view of a tunnel carved into a rocky cliff, bordered by bare trees, on the Route de la Grande-Charteuse. Printed text at the bottom: 'G. et D. Voiron 127. Route de la Grande-Charteuse — The Tunnels'. Reverse: B&G stamp, circular postmark 'Couvent de la Grande Chartreuse (Isère)', and inscription 'CORRESPONDANCE'.