Citipati mask. (female) Monpa people, border area Arunachal Pradesh and Bhutan. 19th / 20th century.

Citipati is a protector deity in Tibetan Buddhism and Vajrayana Buddhism of India. There is a male and female one, to show the masculine and feminine aspect of human being. They are used, twice yearly, during ceremonial dances. By wearing the skull mask, the dancer takes the role of Citipati and shows the eternal dance of death as well as perfect awareness.