Photos: Kumbh Mela, world's biggest religious festival Colored powder billows over the crowd during the Kumbh Mela festival in Allahabad, India, on March 9. A record 120 million pilgrims took a dip in the Sangam -- the confluence of the Yamuna, Ganges and mythical Saraswati rivers -- to symbolically wash off their sins during the two-month-long festival that ended March 10.