This is a photo of the east wall of the Temple Mount. The straight seam (visible in the center of the photo, from the bottom of the wall up through the first six courses of the stones) is at the south end of the east wall. In the right half of this photo (from the straight seam to the right edge) are stones from the Hasmonean addition to the Temple Mount wall. The second extension to the left (south) of the Hasmonean extension was done by Herod beginning in 19 BC. These southern additions covered up most of the remains of the Seleucid fortress called the Acra.