Well, I live in Alaska. 95% of this state is woodland in the spring/summer/fall, then covered in about a quarter-mile of snow (not much of an exaggeration) in the winter. We have predators everywhere, and the mosquitoes and other vermin/pests can do just as much damage to a corpse as a bear. During the summer the heat can top out at about 90 degrees, because 20+ hours of light.
In short, I can drive in virtually any direction for about 45 minutes, take a hike for another half-hour, dump the body on the ground, and it'll be taken care of inside of a week.