The western wall has been exposed (above ground) for years. But now, you can go underneath the western wall and see the massive stones that Herod used to build the temple. Long sections of the southern wall of the Temple Mount and its southwestern corner were exposed during the 1970s, furnishing a comprehensive picture of the monumental Herodian walls surrounding the Temple Mount and the vast, planned areas of public construction outside of them.
The western wall of the Temple Mount, inside today's Old City of Jerusalem, is the longest - 485 meters. Most of its construction features, including the foundations and the four gates once located in it, are now known. Not far from the southwestern corner of the Temple Mount, the remains of "Robinson's Arch" can be seen projecting from the wall. This arch once supported a monumental staircase which gave access to the Temple Mount from the main street below it.
Today, you can see women and men praying in this tunnel which is thought to be the closest site near the "Holy of Holies". The "Western Stone" is an incredible site. This one stone is measured to be 13.5 meters long and 4.5 meters wide and weighs 570 tons. It's the largest contiguous stone along the western wall. Here's a quick video tour under the Temple Mount in Old Jerusalem.
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