'Cleft of the Rock' in the Bible

and it shall come to pass, while my glory passeth by, that I will put thee in a cleft of the rock, and will cover thee with my hand until I have passed by:

And he smote them hip and thigh with a great slaughter: and he went down and dwelt in the cleft of the rock of Etam.

Then three thousand men of Judah went down to the cleft of the rock of Etam, and said to Samson, Knowest thou not that the Philistines are rulers over us? what then is this that thou hast done unto us? And he said unto them, As they did unto me, so have I done unto them.

Take the girdle that thou hast bought, which is upon thy loins, and arise, go to the Euphrates, and hide it there in a cleft of the rock.