Abstract: The shape and integrity of the ancient tombs is valuable data to archaeological excavation. The synthetic survey methods of ground penetrating radar, mercurometric survey and drilling with Luoyang shovels were used for the shape and integrity investigation of four Chu-tombs, which were buried in Northwest Hunan Province two thousands years ago. Firstly the holes dug by a Luoyang shovel with manpower were for gravel passage searching. Then parallel and vertical profiles to the passage were surveyed with GPR and soil mercury over the gravel pit. The reflective radar arrivals of the radargrams were used for the hollow and pit outlining of the tombs. High soil mercury anomaly and horizontal discontinuous traces indicated destroyed tombs with robbed holes. !2
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