India began on Monday its Maha Kumbh Mela, or Great Pitcher Festival, which is expected to draw more than 400 million visitors to the northern city of Prayagraj over six weeks, making for the largest gathering of humanity in the world.

Held every 12 years, the Maha Kumbh Mela or Great Pitcher Festival, as the religious event in the city of Prayagraj in the northern state of Uttar Pradesh is called, attracts more than 400 million visitors, both Indians and tourists.

Hindu ascetics, from crowd of 35 million devotees attending, take dip in freezing waters, seeking absolution from sins.