View looking at what Garfinkel calls Room 1 in his lecture. (51:47 of his lecture). Room 1 includes the cobblestone floor on the right. Note the massive wall behind it—in his lecture, this wall appears to be at about 4 feet tall (picture at 52:24 of his lecture).
The grey/black tarp, that is held in place by sandbags, seems to cover a mud brick wall. Garfinkel's Room 2 in beyond the tarp covered wall.
Garfinkel says that Rooms 1, 2, 3 and 4 near it, date to the time of David—i.e, 1,000 BC.