Entrance to a salt mine, Durrnberg, Austria, 19th century.
© Science Museum / Science & Society Picture Library
'Obersteinbergstollen'. Lithograph by J Stiesberger of Salzburg showing the tunnel entrance of a salt mine. This lithograph is one of eight salt mining scenes taken from a booklet entitled 'Durrenberg und seine Grubenfahrt' ('Durrenberg and its Mine Rides') by Stiesberger, designed as a souvenir for tourists visiting the famous salt mines at Durrnberg (modern spelling), near Salzburg, Austria.