That which forms your day-to-day surroundings, be it home, workplace, rural area, village, town or city where you live, commuter train, motorway, where you walk the dog, shop, etc.
For a full description, please read the challenge thread at:
http://forums.dpreview.com/forums/read.asp?forum=1026&message=15831613
The challenge runs from Friday 11th November till Monday 5th December at 9.30 pm GMT.
Please read the challenge rules at:
https://pbase.com/kodak_challenge/rules
There is also The Idiot's Guide if you want help preparing and uploading your images:
https://pbase.com/kodak_challenge/idiots