Other source I saw said it was a foundation.
I need to turn myself in (I suspect many others here too) as I have examined foundations on construction sites in the past also.
Looking at the photo, it was a bright sunny day. Wide open foundation surrounded by other finished homes. On foot in shorts and a t-shirt. Worst burglary attempt ever.
Yes, I confess. Guilty as youknowwhat.
Ain't gonna stand there and get shot by some yahoo, though. Gonna at least try, or die.