The Hajj (Arabic: حج Ḥajj) is the annual pilgrimage to Mecca, Saudi Arabia. It is currently the largest annual pilgrimage in the world, and is the fifth pillar of Islam, a religious duty that must be carried out at least once in their lifetime by every able-bodied Muslim who can afford to do so. The Hajj is a demonstration of the solidarity of the Muslim people, and their submission to God Muslim pilgrims move around the Kaaba, inside the Grand Mosque in Mecca, Saudi Arabia on Saturday, Nov. 13, 2010. (AP Photo/Hassan Ammar) (WATCH KAABA ONLINE)
Muslim pilgrims circle the Kaaba at the center of the Grand mosque in Mecca during the annual Hajj pilgrimage November 11, 2010. (REUTERS/Mohammed Salem) (WATCH KAABA ONLINE)
Muslim pilgrims perform Friday prayers in front of the Grand Mosque in Mecca, on November 12, 2010. (MUSTAFA OZER/AFP/Getty Images)
A general view shows the Saudi holy city of Mecca, as seen from the top of Noor mountain, late on November 13, 2010. (MUSTAFA OZER/AFP/Getty Images) (WATCH KAABA ONLINE)
A Saudi worker stitches Islamic calligraphy in gold thread on a silk drape to cover the Kaaba at the Kiswa factory in Mecca< Saudi Arabia on November 8, 2010. The Kaaba cover is called Kiswa and is changed every year at the culmination of the annual Hajj or pilgrimage. (MUSTAFA OZER/AFP/Getty Images) (WATCH KAABA ONLINE)
Thousands of tents housing Muslim pilgrims are crowded together in Mina near Mecca, Saudi Arabia, Sunday, Nov. 14, 2010. (AP Photo/Hassan Ammar)
Muslim pilgrims are seen on their way towards a rocky hill called Mount Arafat, on the Plain of Arafat near Mecca, Saudi Arabia on Monday, Nov. 15, 2010. (AP Photo/Hassan Ammar)
An ambulance is parked among thousands of Muslim pilgrims praying near the Namira Mosque at Mount Arafat, southeast of the Saudi holy city of Mecca, on November 15, 2010. Pilgrims flooded into the Arafat plain from Mecca and Mina before dawn for a key ritual around the site where prophet Mohammed gave his farewell sermon on this day in the Islamic calendar 1,378 years ago. Pilgrims spend the day at Arafat in reflection and reading the Koran. (MUSTAFA OZER/AFP/Getty Images)
Muslim pilgrims pray outside Namira mosque in Arafat near Mecca, Saudi Arabia, Monday, Nov. 15, 2010. (AP Photo/Hassan Ammar)
Pilgrims fill the streets in prayer, near Namira mosque in Arafat, Saudi Arabia on Monday, Nov. 15, 2010. (AP Photo/Hassan Ammar)
Pilgrims pray on the side of Mount Arafat, near Mecca, Saudi Arabia on Monday, Nov. 15, 2010. (AP Photo/Hassan Ammar)
Muslims on the Hajj pilgrimage take a rest in Mina near Mecca, Saudi Arabia on November 15, 2010. (REUTERS/ Fahad Shadeed)
Muslim pilgrims pray atop Mount Arafat, southeast of Mecca, on November 15, 2010. Pilgrims flooded into the Arafat plain from Mecca and Mina before dawn for a key ritual around the site where prophet Mohammed gave his farewell sermon on this day in the Islamic calendar 1,378 years ago. (MUSTAFA OZER/AFP/Getty Images)
Muslim pilgrims stand on top of Noor mountain where the Hiraa cave is located overlooking Mecca late on November 13, 2010. (MUSTAFA OZER/AFP/Getty Images) (WATCH KAABA ONLINE)
In shadows and sunlight, thousands of Muslim pilgrims pray inside the Grand Mosque in Mecca, Saudi Arabia on Friday, Nov. 12, 2010. (AP Photo/Hassan Ammar)
Muslim pilgrims move around the Kaaba, inside the Grand Mosque in Mecca, Saudi Arabia on Saturday, Nov. 13, 2010. (AP Photo/Hassan Ammar) (WATCH KAABA ONLINE)
Muslim pilgrims circle the Kaaba at the center of the Grand mosque in Mecca during the annual Hajj pilgrimage November 11, 2010. (REUTERS/Mohammed Salem) (WATCH KAABA ONLINE)
