Ethnic Tibetan monks sit in front of a giant thangka, a sacred painting on cloth, to be displayed on...
Ethnic Tibetan monks sit in front of a giant thangka, a sacred painting on cloth, to be displayed on a hill outside a monastery in Aba, Sichuan province February 19, 2008. Thousands of Tibetan pilgrims gather to celebrate Monlam, or Great Prayer Festival, one of the most important festivals in Tibetan Buddhism. REUTERS/Reinhard Krause (CHINA)