The Char Dham ("four abodes") is a set of four pilgrimage sites in India. Vaishnavite Hindus believe that visiting these sites helps achieve "Moksha" (salvation). It comprises Badrinath, Dwaraka, Puri and Rameswaram. It is considered by Hindus that every Hindu must visit the char dhams during one's lifetime. The Char Dham as defined by Adi Shankaracharya consists of four Vaishnavite pilgrimage sites. Another circuit of four ancient pilgrimage sites in the Indian state of Uttarakhand viz. Yamunotri, Gangotri, Kedarnath, and Badrinath is referred to as Chota Char Dham to differentiate it from this bigger circuit of Char Dham sites. These Chota Char Dham shrines are closed in winter due to snowfall and reopen for pilgrims with the advent of summer.