Stone ruins

I've driven by these stone ruins numerous times and have wanted to stop to take a photo. Since the weekly challenge theme is Stone, I had a good excuse to walk in through the long grass, over the gate on the ground that said "Private Property. Stay out", and get close enough to take a shot.
I don't know what this building would have been, but obviously there was a fire that destroyed the wooden parts. It's rather long and narrow. I'm sure G would have had a good guess if he'd been with me. I'll have to go back with him.