The Maha Kumbh Mela, or the Great Pitcher Festival, will bring more than 400 million people to Prayagraj city in northern India over a period of six weeks starting Monday, making it the largest gathering of humanity in the world.

Millions of Hindu devotees and mystics have gathered in the northern Indian city of Prayagraj for the Maha Kumbh festival, which is the largest religious congregation on earth.

Scores of naked Hindu ascetics smeared in holy ash charged into the water of holy rivers in northern India yesterday, dreadlocks flying, during the first “royal bath” of the Maha Kumbh Mela, or Great Pitcher Festival.