John Gill Commentary 1 Samuel 14:5

"The one crag rose up on the north in front of Michmash, and the other on the south in front of Geba." — 1 Samuel 14:5 (ASV)

The forefront of the one was situate northward, over against
Michmash
The northern precipice of this rock was towards Michmash, where the Philistines lay encamped, and where was the passage of Michmash the garrison went into and possessed:

and the other southward, over against Gibeah ;
the southern precipice faced Gibeah, and both precipices were to be got over before he could get to the garrison, these lying between the two passages; the one at one end, called the passage of Michmash, the other at the other, which might be called the passage of Gibeah.