Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Millions of Muslims on Annual Hajj Pilgrimage VOA News 14 November 2010 Thousands of tents housing Muslim pilgrims are crowded together in Mina near Mecca, Saudi Arabia, 14 Nov 2010. Photo: AP Thousands of tents housing Muslim pilgrims are crowded together in Mina near Mecca, Saudi Arabia, 14 Nov 2010. The annual Islamic pilgrimage draws 2.5 million visitors each year, making it the largest yearly gathering of people in the world. Muslims from all over the world are gathering Sunday in Saudi Arabia for the annual Hajj pilgrimage. More than two million pilgrims will gather at Mount Arafat Monday for the high point of the pilgrimage. Crowds of white-robed hajjis will arrive early in the morning on the mountain east of the holy city of Mecca. The site is where the Prophet Muhammad gave his last sermon. Following prayers at Mount Arafat, the pilgrims will cast stones at walls in Mina in a symbolic renunciation of the devil - one of the key events in the next several days. The pilgrimage ends with the start of the Muslim festival of Eid al-Adha, or "feast of the sacrifice," when a sheep is dacrificed following the tradition of the Prophet Abraham. The pilgrimage is one of Islam's five obligations. Every Muslim, if capable, must perform it at least once during his or her lifetime. Many Muslims believe that their journey to Mecca and the pilgrimage will absolve them of their sins, and that they will return home with a fresh slate. For the first time, a new train will transport pilgrims between Mina and Mount Arafat to minimize the risk of overcrowding this year. Three years ago, more than 300 pilgrims were crushed to death in a stampede during the symbolic stoning of the devil ritual. .