Phi Ta Khon is a way for the spirits to be remembered and let off some steam, before being laid to rest once more for another year. The first day of the festival is known as Wan Ruam, or Assembly Day. Before dawn, the village elders and Jao Paw Guan – the head holy man – make their way to the Muan River. On the banks of the river, these men perform a sacrificial ritual to awaken Phra Ub-pa-kud, a highly revered monk who spends his time meditating beneath the flowing river waters. The water bubbles vigorously at the end of the ritual, signifying that Phra Ub-pa-kud has awakened once more.