Fire investigators with the SBI say they can not determine the cause of Wednesday’s fire at Wolf Ridge Ski Resort. They say too much of the building was destroyed, which made it extremely difficult to find the source of the massive blaze. The fire started around 1:30 a.m. Wednesday. They say there is not much left to sift through and says the wind blew away much of the evidence. On top of the intensity of the fire, crews had to battle ice-covered roads and frigid conditions to try to put out the flames.