Tibetan Buddhists and tourists view a giant thangka, a religious silk embroidery or painting unique to Tibet, during the Shoton Festival at Drepung Monastery on the outskirts of Lhasa, Tibet autonomous region August 29, 2011. Shoton Festival, usually celebrated in the sixth month of Tibetan calendar, is one of the most important festivals in the Tibetan Buddhism and in Tibetan area. Shoton Festival means the festival when people drink Yoghurt according to the explanation of Tibetan. [Photo/Agencies]

Tibetan monks unfold a giant thangka, a religious silk embroidery or painting unique to Tibet, during the Shoton Festival at Drepung Monastery on the outskirts of Lhasa, August 29, 2011. [Photo/Agencies]