Millions of Hajj pilgrims descend on Mina
16 November 2010 Last updated at 13:02 GMT
It is the third day of the world's largest annual pilgrimage, the Hajj, in Saudi Arabia.
Today pilgrims are descending on the Mina valley carrying bags of pebbles to symbolically stone Satan.
There have been deadly stampedes in the past, but the Saudi authorities have now revamped the area.
Our reporter Shaimaa Khalil is at the stone-throwing bridge.