Park near N 38 48.766 W 077 31.260. It is a short, easy walk almost due north to the virtual cache coordinates. There are several miles of trails and other areas of interest in the park, make a day of it and see how far you can get! Prove you were there! Name one of the people responsible for the cache being erected.
Since this is a National Park, there is a $3.00 fee per adult. Children under 17 are free. Payable at the Visitors Center.
Be sure to check out my other virtual cache, "Well of decay" while you are here.