The creation of a digital archive on Tsukuriyama burial mounds and the renovation of spatiotemporal analyses.

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Three-dimensional data of archaeological sites and monuments such as burial mounds, a stone chamber and a stone coffin were obtained, proceeded and archived on the field of Tsukuriyama(Zozan) tomb, Okayama-city, the fourth largest mound in Japan, some tombs in the vicinity and another Tsukuriyama(Sakuzan) tomb, Soja-city. Surrounding moats and ramparts of Tsukuriyama(Zozan) tomb have been identified for the first time through our excavations of Tsukuriyama(Zozan) tomb. At Senzoku tomb, some severe damage of the carved ornaments of the stone chamber was exposed and since then rescue operations were conducted by the Educational Board of Okayama-city. Based on newly obtained digital data of burial mounds, we can promote the research of construction design of Keyhole-shaped burial mounds.