Easton's Bible Dictionary (1897)
, “Valley of the Cheesemongers”), the name given by Josephus the historian to the valley or rugged ravine which in ancient times separated Mount Moriah from Mount Zion. This valley, now filled up with a vast accumulation of rubbish, and almost a plain, was spanned by bridges, the most noted of which was Zion Bridge, which was probably the ordinary means of communication between the royal palace on Zion and the temple. ) of this bridge (called “Robinson’s Arch”), where it projects from the sanctuary wall, was discovered by Robinson in 1839.
This arch was destroyed by the Romans when Jerusalem was taken.