'Vue du Lac du Bourget', c 1865.
© National Media Museum / Science & Society Picture Library
Photograph of the entrance to a railway tunnel on the shores of Lac du Bourget in the Alpine region of France, taken by Joguet et Fils. Muzet Joguet ran a studio based in Lyon, France, during the 1860s. The studio specialised in topographic photographs and documentary studies of civil engineering works.