Jerusalem is defined by three valleys: the Kidron, Tyropean and Hinnom. In the photo below we are standing in the Tyropean Valley. Jews come here to mourn the destruction of the temple, among other reasons. This wall was not part of the temple itself, but was the retaining wall for the temple and the structures on the temple mount. Some of the courses of larger stones starting from bottom are Herodian, and weigh several tons each.
I’ve visited this very special location on numerous occasions, but this past November I had the occasion to take some night-time photos.
Click image for larger view.