Camping around Bs. As.

Hey All, After 35 straight nights of nearly starless skies, I am getting a serious itch to get out of town for a night! Does anybody know of any cool campgrounds outside of the city? I am looking for a place where I can fulfill my primal need to make and tend to my own fire. On a related note: is it possible to find marshmallows in BA?
Thanks for the suggestion Bill, but I think that's a little further out of town than I was thinking. I'd like to go somewhere within 3 hrs drive or so of the capital for a weekend trip. Anyone have any other ideas?