GREAT HEIGHTS. A true mountain stronghold, Sela (meaning “rock” in Hebrew) is surrounded by deep ravines on all sides. It is accessible only by a single staircase leading up the rocky promontory. Near this staircase, the Babylonian king Nabonidus carved an inscription partway up the cliff—commemorating his conquest of the site. To study this inaccessible inscription, members of the Sela Archaeological Project rappelled down to it.