What is "ganggangsullae"

Ganggangsullae ( Hangul: 강강술래) is a 5,000-year-old Korean dance that was first used to bring about a bountiful harvest and has developed into a cultural symbol for Korea. It incorporates singing, dancing, and playing and is exclusively performed by women. The dance is mostly performed in the southwestern coastal province of Jeollanam-do. It is often associated with the Chuseok holiday and Daeboreum.