Grill or Privy?

This rectangle of stones in my yard, old foundation of something, has always been here and always had dirt in it, so I put native plants in it. After a few years I noticed flagstones, almost sunk into the yard, that formed a path from the kitchen door to this rectangle. The original cabin, built around 1930, had no bathroom or a kitchen; we know this because they are obviously add-ons. So I thought this might be the foundation of an old privy. Its measurements, 3.5 x 5 feet, are standard for a double-seated privy. (Double seating was not a luxury, or a his-and-her thing. There was a small hole for children to sit on, and a larger one for adults.)

While raking a few days ago my tines struck stone in front of the "privy" and, curious, I dug there and uncovered a flagstone apron nicely fitted to the foundation with concrete. No privies at Scout camp had stone foundations or flagstone aprons -- privies are not permanent structures, because they fill up and have to be moved -- so I thought this might instead be the foundation of a stone barbecue pit, the kind everyone's dad wanted in the '50s. The other house on this property, built in the 1950s, had a flagstone patio with a stone grill that was crumbling when I first saw it and has since been demolished. Maybe both houses had barbecue pits built simultaneously to keep each tenant happy.

Thanking the Jesuits for my training in logic, I figured it's a barbecue pit. The flagstone path leads from the kitchen door and there was no kitchen door when the cabin was built. The rectangle is situated on three inches of soil atop twelve solid inches of hard yellow clay sloping toward a cliff edge, so it is unlikely a 10- or 12-foot privy pit could have been dug here. Although it is without traces of firebricks or lining and must have been a flimsy one, it's a barbecue. And I thought, darn, wish it had been a privy!