Unintended roof fall was discovered at approx 2:35 am on the 3 east mains at crosscut No. 11 in No.4 hdg. Fall was in intersection. Fall was approx 10'high and 20'wide and approx 30'long. Fall caught high voltage cable and cable had to be recruited around the fall. All approaches to the fall were timbered off. The fall did not interrupt ventilation and will not be cleaned up.