Large crowds turned out in northern India on Wednesday for the last day of the six-week Maha Kumbh Mela that drew a total of 663 million people seeking absolution of their sins by taking a dip in waters that devout Hindus consider sacred.br br Television images showed security officials trying to direct thousands of visitors around barricades in the temporary township set up in Prayagraj, close to the banks where three holy rivers meet.