Archeologists have uncovered an elaborate entrance to King Herod’s 2000-year-old palace at Herodian in the Judean desert.  They also found hidden tunnels used by Bar Kochba’s army, used in the 132-136 CE revolt against the occupying Roman forces.

http://www.jpost.com/Israel-Elections/Hebrew-University-archeologists-uncover-elaborate-entryway-into-Herodian-Hilltop-Palace-385112