Millions of people are gathering in the northern Indian city of Prayagraj in Uttar Pradesh state to participate in the Mahakumbh Mela, the world’s largest gathering of humanity.

Devout Hindus from all parts of the world have arrived here (and will continue to do so) over the course of six weeks to take a holy dip at Sangam – the confluence of India’s most sacred Ganges river with the Yamuna river and the mythical Saraswati.

Hindus believe taking a dip in the sacred waters cleanses people of sins.

Authorities have set up a sprawling tent city spread across 4,000 hectares of open land along the banks of the rivers to accommodate the visitors, who are arriving at the grounds in colourful large processions, singing and dancing along the way.

Photojournalist Ankit Srinivas brings you some sights from the festival: