Photograph of a large, spherical, dark green cactus. The cactus has deep furrows and steep ridges running vertically, the latter sporting clusters of long, white thorns.
This image is available under either the GFDL version 1.3 or the CC-by-sa version 3.0. Essentially, this gives you the following rights:
If you want to use this image without attribution, I may offer you an alternate license in return for compensation. Contact me with a proposal.
Want to email me about this photo?
Remember, if the image is under a free license, you don't have to ask permission to use it within the terms of the license.