I had that picture made up as one of my option for the visual pun, but decided that it was not easy enough to find the pun line Tunnel Vision. It is not a tunnel it all; just a row of glass tiles I had photographed in a friends house. These tiles are 6x6 inches and often used as decorative wall-element in our area. The let light in but keep the weather out. The photo was cropped and mirrored to archive the tunnel view. Camera Sony DSC-H9 F# f/5.6 Focal length 5 mm Exposure 1/320 sec Aperture 2.875 ISO 100