This tusk was used by a tribe in Africa against its enemies; it was taken from the corpse of the only known elephant to be killed by boa constrictor.
When the tusk is plunged into the ground, anyone that goes near it will be attacked and squeezed to death by snakes that seem to pop out of the earth.
The likelihood of and Elephant being killed by a Boa Constrictor is extremely low. Not because of their comparative sizes but due to the Boa being from the Americas and not Africa. It is likely that the Boa was used as it is more well known as a constrictor than the African Rock Python.