October 25, 2012
From Hajj 2012, A Sacred Journey, one of 34 photos. Muslim pilgrims pray at the top of Mount Noor, near where the Hiraa cave is located on the outskirts of Mecca, Saudi Arabia, on October 21, 2012. The annual Islamic pilgrimage draws three million visitors each year, making it the largest yearly gathering of people in the world. (AP Photo/Hassan Ammar)

From Hajj 2012, A Sacred Journey, one of 34 photos. Muslim pilgrims pray at the top of Mount Noor, near where the Hiraa cave is located on the outskirts of Mecca, Saudi Arabia, on October 21, 2012. The annual Islamic pilgrimage draws three million visitors each year, making it the largest yearly gathering of people in the world. (AP Photo/Hassan Ammar)