Badrinath is a holy town and a nagar panchayat in Chamoli district in the state of Uttarakhand, India. It is one of the four sites in India's Char Dham pilgrimage and gets its name from the temple of Badrinath. Badrinath was re-established as a major pilgrimage site by Adi Shankara in the 7th century. In earlier days, pilgrims used to walk hundreds of miles to visit Badrinath temple. The temple has been repeatedly destroyed by earthquakes and avalanches. As late as the First World War, the town consisted only of the 20-odd huts used by the temple's staff, but the site drew thousands each year and up to 50,000 on its duodecennial festivals (every twelve years). In recent years its popularity has increased still more, with an estimated 600,000 pilgrims visiting during the 2006 season, compared to 90,676 in 1961. The temple in Badrinath is also a sacred pilgrimage site for Vaishnavites. Badrinath is also gateway to several mountaineering expeditions headed to mountains like Nilkantha.