HIP-S-000267-2758 Coastal artillery operations room, Secret Wartime Tunnels, Dover Castle, Kent, 2011 Credit: Historic England Archive / Heritage Images /Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Date of photography: 2011 Collection: Heritage Images /Alinari Archives, Florence Object type: digital image Photographic technique: P digital image Technical info Image sizes (pixel): 2739 X 3882 Image sizes (cm at 300 dpi): 23 X 32 Image sizes (MB): 1.57 Color space: RGB