“Rock of,” to which the Benjamites fled (Judg. 20:45, 47; 21:13), and where they maintained themselves for four months after the fearful battle at Gibeah, in which they were almost exterminated, 600 only surviving out of about 27,000. It is the present village of Rummon, “on the very edge of the hill country, with a precipitous descent toward the Jordan valley,” supposed to be the site of Ai.