Is it dark in there?
As someone seems to have clicked a button to make this popular, I'd better add a few comments about it (oh and thanks to whoever did that).
The shot is in the tunnels of the former Fort Nepean at the entrance to Port Phillip Bay (near Melbourne, Australia). My son was a little nervous to enter because as well as the dark, there were sound effects (shouting & bangs) in there.
As for the tech side of things, I was experimenting with the capability of shooting in the dark with the new (to me) D7000. The shot is an in-camera B&W jpeg, with a slight touch of highlight slider to bring out the detail in the outside. Interestingly, pulling the shadow slider a long way across allows the writing on the beams to be read "Mind your head" it says.
ISO800, 1/50s and f/4.8
Image META information
|Original File Size||2734239|
|Sections Found||ANY_TAG, IFD0, EXIF|
|HTML Sizes||width="4928" height="3264"|
|Byte Order Motorola||TRUE|
|Camera Make||NIKON CORPORATION|
|Camera Model||NIKON D7000|
|Orientation||The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side|
|Date Taken||2011:07:15 15:32:38|
|Exposure Program||Normal program|
|ISO Speed Ratings||800|
|Date Digitized||2011:07:15 15:32:38|
|Exposure Bias Value||0/1|
|Max Aperture Value||9/2|
|Flash Pix Version||Flashpix Format Version 1.0|
|Sensing Method||One-chip color area sensor|
|Exposure Mode||Auto exposure|
|White Balance||Auto white balance|
|Scene Capture Type||Standard|
|Gain Control||Low gain up|