Phi Ta Khon is a type of masked procession celebrated on the first day of a three-day Buddhist merit-making holiday known in Thai as “Boon Pra Wate”. The annual festival takes place in *May, June or July at a small town of Dan Sai in the northeastern province of Loei. Participants of the festival dress up like ghosts and monsters wearing huge masks made from carved coconut-tree trunks, topped with a wicker-work sticky-rice steamer. The procession is marked by a lot of music and dancing.