1 Samuel 13:5-6

5Now the Philistines assembled to fight with Israel, thirty thousand chariots and six thousand horsemen, and 1people like the sand which is on the seashore in abundance; and they came up and camped in Michmash, east of 2Beth-aven.

6When the men of Israel saw that they were in trouble (for the people were hard-pressed), then 3the people kept themselves hidden in caves, in crevices, in cliffs, in crypts, and in pits.