Great mini-vacation for DC/Baltimore residents. About a 2-3 hour drive and lots to do. Plenty of trails and the park service offers many resources to support options. The drive through the mountain was nicer than we would have imagined it could be in the summer time. Most folks venture out this way in the fall to see the changing of the season and leaves. But summertime was a great visit as well. We saw plenty of wildlife -- deer and bear! Amazing!
There was a one time entrance fee that allowed a week access to the mountain roads.