Caves.
Palestine is remarkable for its number of caves, some of which are of great extent. David and his followers were in a cave in the wilderness of En-gedi, so extensive that they could hide themselves, though Saul came into the same cave. 1 Samuel 24:1-8: cf. Hebrews 11:38. The Adullam cave and others also are of note in the O.T. The tomb of Lazarus was a cave. John 11:38.