The slang term "south forty" could mean several things, but some say it refers to the lower 40 acres of a farmer's property. This cache is certainly in the lower part of the ONF and it is well south of SR 40 on FR 05, so we will just call it South Forty. No bushwhacking is required.
Remember, this is the forest, so watch for things that might bite, sting, scratch, cut, poke or trip you!