The Iruang Wundrung dance comes from the Dayak Ma'anyan language of the Barito Region which means the word Iruang which literally means to limit/make a place in the same room and Wundrung is a property, the property here is the dance used by traditional shamans in the form of leaves. Young coconuts are used to heal people who have mystical disorders.
So broadly speaking, the purpose of this traditional dance is to share one goal in one room to heal and exorcise evil spirits using Ritual Ceremonies. Like they did it.