Havan being performed by devotees during Nanda Devi Mahotsav in Nainital - Uttarakhand.
The Nandadevi fair is held at Almora, Nainital, Kot (Dangoli), Ranikhet, Bhowali, Kichha and also in the far flung villages of lohar (like Milam and Martoli) and Pindar valleys (like Wachham and Khati). In the villages of the Pindar valley people celebrate the Nanda Devi J aat (journey) every year, while in lohar people come from far and wide to Danadhar, Suring, Milam and Martoli in order to worship the Goddess. In Nainital and Almora thousands take part in the procession carrying the dola (or litter) of Nanda Devi. It is said that the Nanda Devi fairs started in Kumaon during the reign of Kalyan Chand in the 16th Century. A three day fair is held at Kot ki mai or Kot bhramari devi. The fair at Saneti comes every second year. Both these fairs are rich in folk expressions and many village products are brought for sale.
Source:- http://www.nainitaltourism.com/naina_devi_temple.html