More accurately, the St. James Plateau.
The Civil War Trust, stewards of the majority of the preserved and saved Brandy Station Battlefield, allowed Culpeper County to use portions of the St. James Church plateau -- scene of some the most intense and brutal cavalry fighting during the Civil War. This is where the 6th Pennsylvania Cavalry and the 6th United States Cavalry charged into the mouths of nearly the entire Stuart Horse Artillery -- to use this portion of the battlefield to park cars. The Brandy Station Foundation did the same on their property, continuing a practice of allowing parking to support community events.
Just in case you cannot read the sign, it says: