The Naghol festival on Pentecost Island, Vanuatu, is a series of events held in April and May, when the local species of liana plant has enough elasticity to be able to support the weight of an adult man. Following an ancient ritual, the islanders built bamboo tower with several platforms on different levels, from where young men dive head-down with the vines attached to their feet. The sport is believed to be the precursor of modern bungee jumping