Correction: the tribe that worships the Siafu is called the Mofu-Wazan and lives in Cameroon, near the border with Nigeria.
The people of Nigeria sometimes call them the Siafu People, but that's not what they call themselves.
If you wish more info watch, "NOVA-The Masters of the Killer Ants".
Here's a clip: http://www.youtube.com/watch?v=29kErsFdC5w
~FK
__._,_.___
.
__,_._,___