Wow, check it out. This looks like the reverse view, from the other side, of this shot
Baalbek. The Interior of the Temple of Jupiter, Looking East
but the center wedge stone has not yet fallen nor has the crude wall been built below it. One can even see that the stone holding the wedge stone, on the left in this shot, has the huge chip missing from the bottom, same as the stone, now on the right, in the easterly view.
So someone must have stolen the brace after this picture but before the easterly view.