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 six cameras.
This film was really produced by Hal Roach Studios, but because of their exclusive contract with Pathe for distribution, they went under the name James Oliver Curwood Productions for distribution under the new First National Pictures distribution company.