Recycling was in vogue in '34, when unused footage from "Fighting Caravans" (1931) with Gary Cooper was used to remake the very same plot. The result is biodegradable. Settlers heading to Oregon are ambushed by bad guy Blue, employed by fur traders. Blue sics Injuns on them too, but don't worry, they make it. Adapted from Zane Grey's novel "Fighting Caravans."