The traditional bull jumping is a rite of passage for youth to become a man. The event last three days and the Hamar tribe involves only castrated cattle. The youth must jump over a line of anywhere from 8 to 20 cows four times completey nude without falling. If he succeed, he will join the ranks of the Maza. Maza are other men that have successfully completed the bull jumping event. During this ceremony, the women of the tribe provoke the maza to whip them on their bare backs.