Hi Texspearchucker,
welcome to the forum
There are a number of native species of bamboo that grow in Africa. I have several African spears that are 'boo shafted. Not certain as to the origins of the spear posted though. Seems a little small for an effective weapon, probably a hand held stabber....due to the short shaft...so possibly a hunting spear for small game / killing spear for a trapped (but alive) animal. Usually small spears are considered 'dance spears' but this is not always the case.
Regards David