Wait till you check out the second photo & its teeth.
This information has been verified by snopes & is stated to be true. You can access it at this link: http://www.snopes.com/photos/animals/fencesnake.asp
Source: 1 & 2
Buildings Constructed In Unusual Places
Nature At Its Best: Photos, Paintings Or Graphics?
Jul 30, 2007
These photos are from the Exxon/Mobile compound in Luanda - Angola, Africa. If you notice from the insulators in the first photo this is an electrified fence. Many may think & wonder what's the need for an electric fence here?