English: Chhau dance, also spelled as Chau or Chhaau, is a semi classical Indian dance with martial, tribal and folk traditions, with origins in eastern India. It is found in three styles named after the location where they are performed, i.e. the Purulia Chau of Bengal, the Seraikella Chau of Jharkhand, and the Mayurbhanj Chau of Odisha. The above picture shows a mask worn during a chhau performance