Albert Barnes Commentary 1 Samuel 23:28

"So Saul returned from pursuing after David, and went against the Philistines: therefore they called that place Sela-hammahlekoth." — 1 Samuel 23:28 (ASV)

Sela-hammahlekoth - See the marginal note. (This has been identified by Conder with a narrow and impassable gorge between El Kolah and Maon, called Malaky).