Maha Kumbh: The biggest spiritual congregation on earth

Hindu monks extinguish the fire on the roof of a temporary temple structure of the Hindu sect Sri Panchayati Bada Udasin Akhara at Sangam, the confluence of rivers Ganges, Yamuna during the Mahakumbh festival in Allahabad, India, Sunday, Feb. 3, 2013. There was no casualty or major damages. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/ Rajesh Kumar Singh)

Hindu holy man Anand Giri checks delicacies before being served in a community feast at Sangam, the confluence of the Ganges and Yamuna River during the Maha Kumbh festival in Allahabad, india, Thursday, Jan. 24, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. During the festival pilgrims bathe in the holy Ganges River in a ritual they believe can wash away their sins. (AP Photo/ Rajesh Kumar Singh)

Hindu monk Surendra Muni, 23, of the Hindu sect Sri Panchayati Bada Udasin Akhara at Sangam, stands at the confluence of rivers Ganges, Yamuna during the Mahakumbh festival in Allahabad, India, Sunday, Feb. 3, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/ Rajesh Kumar Singh)

A naked Hindu holy man of the sect Anand Akhara sits near a fire as others relax outside their tent at Sangam, the confluence of the rivers Ganges and Yamuna during the Maha Kumbh in Allahabad, India, Tuesday, Feb. 5, 2013.Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/ Rajesh Kumar Singh)

A Hindu woman carries water from the River Ganges, considered holy by Hindus at Sangam, the confluence of the rivers Ganges and Yamuna during the Maha Kumbh festival in Allahabad, India, Tuesday, Jan. 22, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. During the festival pilgrims bathe in the holy Ganges River in a ritual they believe can wash away their sins. (AP Photo/ Rajesh Kumar Singh)

A Hindu holy man carrying a Trident, walks at Sangam, the confluence of rivers Ganges and Yamuna during the Maha Kumbh festival in Allahabad, india, Thursday, Jan. 24, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. During the festival pilgrims bathe in the holy Ganges River in a ritual they believe can wash away their sins. (AP Photo/ Rajesh Kumar Singh)

Hindu holy men walk at Sangam, the confluence of rivers Ganges and Yamuna during the Maha Kumbh festival in Allahabad, Monday, Feb. 4, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/Rajesh Kumar Singh)

A Hindu holy man sits on a chair of nails placed on a metallic swing hung above fire at Sangam, the confluence of rivers Ganges and Yamuna during the Maha Kumbh festival in Allahabad, Monday, Feb. 4, 2013. Millions of Hindu pilgrims are expected to attend the Maha Kumbh festival, which is one of the world's largest religious gatherings that lasts 55 days and falls every 12 years. (AP Photo/Rajesh Kumar Singh)