In this case, the "back" country is actually the front of the cage. That's where we keep the water, hay racks, and pellet bowls. The pigloos, and therefore the sleeping areas, are in the back half of the cage. So sleeping out front really is a bit of an adventure for the pigs. No cover, just out in the elements.
That said, it's not really much of a hike. But Beanie's not really into hiking anyway.