A Vietnamese archeol...: A Vietnamese archeologist explains features of a ceramic decoration of ancient citadel of Thang Long on Hanoi Jan 31, 2004. This decoration has the shape of dragon head and it was attached to the roof of the ancient Forbidden Citadel. All these findings have just uncovered from the ground of Hanoi and come from the Tran, Le and Ly dynasties of the 13th to early 18th century. KTS photo/ Nguyen Hong Sam /Nguyen Hong Sam