In the Blue Mounds Driftless Area of Black Earth, Wisconsin, a $4,500,000 property offers ranch-worthy acreage, a grand 5-bedroom home, a custom horse barn, and a slew of standout amenities. Among them: a private airstrip and helicopter pad, so the future owners won’t have to spend any time in traffic trying to get here. The property is listed with Shelly Sprinkman of Sprinkman Real Estate —...