A roof fall occured in the 1 South, crosscut #38, starting in the pillar line between #6 and #7 entry proceeding through the intersection of #7 entry. The roof fall measured approximately 35'X 19'X 6'. An undetected slip was determined to be the cause of the fall. The area was supported with 6' tension rebar bolts and the intersection of #7 entry was xd-out with 9' mega bolts.