A stretch of land just outside Yellowstone National Park that was once considered a potential site for gold mining is now permanently protected public land. As the Daily Montanan reported, the move protects habitat for grizzly bears and migration routes for elk, bighorn sheep, and mule deer, as well as one of the few places outside Yellowstone where bison can still roam freely. A 161-acre parcel near Gardiner, Montana, is now part of the Custer-…