People struggle to catch the tail of dragon during the Ducasse de Mons or Doudou celebration in Mons, Belgium, June 3, 2012. The popular festival, originating in the Middle Ages and depicting the combat between Saint George and a dragon, is celebrated every year on the Trinity Sunday (57 days after Easter) in the town. It is recognized by UNESCO as one of the Masterpieces of the Oral and Intangible Heritage of Humanity. [Xinhua]