An unplanned roof fall at the anchorage zone where 6 ft. bolts are in use. The fall is approximately 20 ft. wide by 21 ft. long by 6 ft. high in 22 Right, Crosscut 115+14, adjacent to #1 Entry. No apparent contributing factors were identified. Cracks in the adjacent entry indicate floor heaving but the roof appears to be adequately supported with rock props and timber.