Not sure where Ben got his information. My Merriam-Webster specifically lists this as the definition of caduceus (I point specifically to def #2):
1. the symbolic staff of a herald; specifically : a representation of a staff with two entwined snakes and two wings at the top 2 : an insignia bearing a caduceus and symbolizing a physician
It's not just the picture that's fake. The story itself is all fake. The source: The Weekly World News. Come on! I love reading the WWN for pure entertainment value, but that's about it...
"Let's find a lake we can roll these barrels of sodium into! It'll be wicked cool!"
1. the symbolic staff of a herald; specifically : a representation of a staff with two entwined snakes and two wings at the top
2 : an insignia bearing a caduceus and symbolizing a physician
http://en.wikipedia.org/wiki/Basilica_of_Our_Lady_of_Peace_of_Yamoussoukro