 No Gun Ri villagers said that in later decades , two mass graves holding some victims ' remains were disturbed , and bones were removed during a reforestation project , and by farming activity . In 2007 , excavations at several places near the bridge turned up little . The forensics team said that it hadn 't found more , because so much time had passed , and any remains had been exposed to the elements and soil erosion , railway work , cultivation , and highly acidic soil . 
