Bun Bang Fai Rocket Festival is an ancient local festival, which is associated with Thai traditional beliefs in the supernatural powers.During the festival, rockets are fired into the air to ask the god of rain to help nature a good harvest free from drought, floods or pests.Traditionally, rockets are made by stuffing gunpowder into elaborately decorated bamboo. But today, many different materials are used, including glass or metal piping. They come in a variety of sizes from very small to very large.