What is the traditional folk dance of west bengal-?

Purulia Chhau is the traditional folk dance of West Bengal. It is a martial dance form that originated in the Purulia district of the state. Purulia Chhau is performed by male dancers who wear elaborate masks and costumes. The dance is accompanied by traditional music and instruments. Purulia Chhau is a UNESCO-recognized Intangible Cultural Heritage of Humanity.