I'm pretty sure that that Leviticus fragment is the one mentioned here and links. For the Khirbet Qeiyafa inscription, see here and links. More on the wall that some have connected with the wall of Nehemiah here and links. Endless links on Herod's possible tomb are here. Posts on the ancient Jerusalem tunnels are collected at the end of this post. And more on revisionist understandings of the fall of Masada can be found here, here, and links.