caption: Muslim pilgrims pray on a rocky hill called the Mountain of Mercy, on the Plain of Arafat near the holy city of Mecca, Saudi Arabia, Thursday, Oct. 25, 2012. Saudi authorities say around 3.4 million pilgrims -- some 1.7 million of them from abroad -- have arrived in the holy cities of Mecca and Medina for this year's pilgrimage. (AP Photo/ <PERSON>)
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