The Boryeong Mud Festival is held every year on Daecheon beach in South Korea. Thousands of gallons of mud are taken from the Boryeong mud flats to create attractions such as a huge mud pool with mud slides.

The festival runs for two weeks and attracts enormous crowds; organisers claim more than two million people attended the 2007 festival.

The mud is rich in minerals and is used in cosmetic products; indeed the festival was originally started as a marketing vehicle for Boryeong mud cosmetics.