Millions travel for Hindu festival

A sadhu or Hindu ascetic monk is pictured on Feb. 8, 2013. The Maha Kumbh Mela, believed to be the largest religious gathering on earth, is held every 12 years on the banks of Sangam, the confluence of the holy rivers Ganga, Yamuna and the mythical Saraswati.

Credit: Marsha Cooke/CBS