Using Barclay's and Norma Robertson's research, we can assume that approx 606 feet (one Greek furlong) from the SW corner of the Temple Mount, and approx 40 feet below the current ground level of the Mount, one would find three, now blocked up, arched entryways in the south wall.
Using Barclay's and Robertson's investigation, we can estimate that approximately 606 feet (one Greek furlong) from the SW corner of the Temple Mount, about 40 feet below the present-day ground level, would reveal three, now sealed, arched openings in the south wall.