Sela-hammahlekoth

cliff of divisions the name of the great gorge which lies between Hachilah and Maon, south-east of Hebron. This gorge is now called the Wady Malaky. This was the scene of the interview between David and Saul mentioned in (1Sam 26:13). Each stood on an opposing cliff, with this deep chasm between.

EBD - Easton's Bible Dictionary