The Ishibutai ancient burial mound during a special light performance in the city of Asuka, Nara prefecture, Japan, Dec. 4. The burial mound, made from 30 gigantic stones, is one of the largest stone tombs in Japan. The large central stone on the top of the tomb weighs 77 tons and is the largest stone used in ancient Japanese tombs. The tomb, believed to have been built is in the 7th century, is called 'the Stonehenge of Japan.'