Hajj Pilgrimage to Mecca

Muslim pilgrims pray on Mount Arafat, near the holy city of Mecca, ahead of the hajj main ritual, Oct. 25, 2012. Vast crowds of Muslim pilgrims, all dressed in white, flocked from early in the morning to Mount Arafat in Saudi Arabia's west to take part in the main rituals of the annual hajj. (Fayez Nureldine/AFP/Getty Images)