The hajj pilgrimage to Mecca is a key aspect of the Islamic faith that every Muslim must undertake at least once in his lifetime. This year, 2.5 million people are expect to travel to the Saudi Arabian city, leading to a host of awe-inspiring photos of the faithful.
Mountain of Light Photo: MAHMUD HAMS/AFP/Getty Images
Vendor on the Mountain of Light Photo: MAHMUD HAMS/AFP/Getty Images
Pilgrims Rush Down a Street Streaked With Rain Photo: MAHMUD HAMS/AFP/Getty Images
Security Official Watches Over Praying Muslims Photo: AP Photo/Hassan Ammar
A Muslim Woman Climbs the Mountain of Light Photo: MAHMUD HAMS/AFP/Getty Images
The Mosque of the Prophet Mohammed Photo: MAHMUD HAMS/AFP/Getty Images
Saudi Man Wearing Swine Flu Mask Photo: MAHMUD HAMS/AFP/Getty Images