Architectural archaeologist Leen Ritmeyer has identified the footprint of a square platform measuring 50 cubits on each side, proposing it as an ancient platform, probably built by Hezekiah c. 700 BCE to expand flat area in which the faithful could gather at the Solomonic-era Temple.
According to Hershel Shanks, "most scholars," think that Ritmeyer is "correct" on both of these points [REF].