This file is licensed under Creative Commons Attribution 2.5 License
In short: you are free to distribute and modify the file as long as you attribute its author(s) or licensor(s).
Attribute to Ryan Bushby
This image was created by stitching together 20 sets of HDRI images each created from 3 exposures. This makes for a total of 60 photographs used to create this image. I used CHDK so allow for the taking of several bracketed shutter speed exposures without re-metering in between.
The whole process is described here.