If you are camping by Washington D.C., this is the place. A great deal At $20 / night compared to another one i will leave unnamed at $90/ night....OUCH! Greenbelt campground has 4 loops (A, B, C, D)A is for scouts group camp, B & C for tents and small RVs due to tight turns and low hanging trees. D is for anything over 30 ft. There is lots of shade trees & trails here. It is primitive but there are bathhouses conveniently located with plenty of water spigots in the loop. If you don't use reserve america to book a site, there is a self check-in option for walk -ups by ranger station. The Metro station is nearby (@ 2 miles) to catch a train into D.C. for sightseeing.