Exclusively performed by Nyishi tribes in February to welcome the spring, and a successful harvest, Boori Boot is a must experience over a trip to Arunachal Pradesh. Nyishi is the largest community in Arunachal Pradesh, and are mainly settled in Daporijo, Upper Subansiri Locale and Raga and Dollungmukh ranges of Lower Subansiri Region of Arunachal Pradesh. This fortnight-long festival begins with various competition like tug of war, folk dance, and archery. It is believed that the festival evokes the spirit of Boori Boot, who will bless them with all the happiness, and free from every kind of disease. A special puja is performed by the priest- Nibu, followed by an animal sacrifice for the mankind to be blessed with prosperity and be free from diseases.
