Betty Blythe and Lon Chaney were burned while filming the forest fire scene when a blaze that popped up unexpectedly blocked their escape. They were rescued through a tunnel that had been previously built for just such an occurrence, but filming was stopped for ten days while the actors recovered in a local hospital.
The crew erected a phony forest on the Universal lot, with fake trees,trimmed with natural foliage, planted in the ground,barked and painted. The forest fire was filmed with 6 cameras.