ChristianAnswers.Net WebBible Encyclopedia
There are numerous natural caves among the limestone rocks of Syria, many of which have been artificially enlarged for various purposes.
The next we read of is the cave of Machpelah (q.v.), which Abraham purchased from the sons of Heth (Gen. 25:9-10). It was the burial place of Sarah and of Abraham himself, also of Isaac, Rebekah, Leah, and Jacob (Gen. 49:31; 50:13). (also see: Ishmael)
The cave of Engedi (q.v.)—now called 'Ain Jidy, i.e., the “Fountain of the Kid”, where David cut off the skirt of Saul’s robe (24:4). Here he also found a shelter for himself and his followers to the number of 600 (23:29; 24:1). “On all sides the country is full of caverns which might serve as lurking-places for David and his men…”
Caves were frequently used as dwelling-places (Num. 24:21; Song of Songs 2:14; Jer. 49:16; Obad. 1:3). “The excavations at Deir Dubban, on the south side of the wady leading to Santa Hanneh, are probably the dwellings of the Horites,” the ancient inhabitants of Idumea proper.