If anyone is coming to the area and wants a nice campground to stay at this is the one - Pohick Bay Regional Park Campground in Lorton, VA.
This is a very nice campground especially if you want to explore Washington DC history. It is just a few minutes from Mount Vernon and about a half hour drive to downtown Washington DC - or even better you can take a Metrorail ride from a nearby station. Price is fair for the area and of the 5-6 times we have been there we have found the area to be clean and well taken care of.
Sorry for the video being a bit grainy - I guess we need a new PC for editing