1 Samuel 22:1,2
David therefore departed there, and escaped to the cave Adullam: and when his brothers and all his father's house heard it, they went down thither to him.
Torrey's Topical Textbook—AKJV

1 Samuel 24:3
And he came to the sheepcotes by the way, where was a cave; and Saul went in to cover his feet: and David and his men remained in the sides of the cave.
Torrey's Topical Textbook—AKJV