I have access to an isolated mating yard. It is deep in the Chequemegon National Forest, it would be surrounded by 6 miles of forest on all sides. I realize there may be feral bees there, but at least no soft commercial bees. My question; is the purpose of the isolated mating yard to "force" the queen to mate with the selected drone mother colonies from the same yard? Since she can't fly far enough to find other drones? Or is the beekeeper expected to have outlying drone mother colonies surrounding the isolated mating yard at lets say a mile or two away?