Move the limestone gravel to an area near the driveway. Loosen the crushed limestone surrounding the pothole using a pickax or shovel. Excavate the pothole area to make a longer-lasting repair.
Pour limestone gravel into the enlarged pothole until the hole is even with the adjacent area. A gravel driveway performs best with a crown in it – a center area that is slightly higher than the sides so water can flow off it. Add or remove gravel to make your driveway conform to the crown shape.
Tamp down the rock using a hand tamp or a tamping machine, which you can rent at a hardware store. This compacts the limestone gravel, creating a durable hard-packed driveway. When you finish tamping, the driveway should still have a crown shape.
Add more limestone gravel and re-tamp. Continue to top off the gravel and tamp down the stone until you've created a level grade once more.
Fix additional potholes the same way.