Bhutan Festival: Treasure Dance at festival in Domkhar, Central Bhutan

This is one of the more important and dramatic sounding festival dances in Bhutan. It is the Treasure Dance, which was introduced into Bhutan in the early Middle Ages by a famous Buddhist treasure hunter, named Terton Pemalinga. His "treasures" were relics holy to the Bhutanese that were, by legend, hidden centuries earlier by their most famous Buddhist saint, Guru Rimpoche.
The red masks are meant to be terrifying to evil spirits, the blue masks show compassion.
Festival dances are performed to ward off evil spirits and bad omens in the lives of the people watching and the surrounding vicinity. The Treasure Dance specifically targets evil ground spirits.
This particular video clip is the last 2 minutes of the full dance. If you wish to see the full dance, watch the other video of the same name with the words "Full Dance" in the title.