I moved all these rocks into place to keep this embankment from caving into the driveway. My question is do I need to shovel in any fine p gravel? Also would it be beneficial for me to mortar around the rocks or would that just crack with time?
I agree. That's why I suggest un-mortared rocks. No mortar to crack. And if it slumps, taking it apart won't become a big performance, and you rebuild only that area.As an owner of a pudding stone wall, avoid; the 2nd law to thermodynamics being what it is.
classicgrandsons flipping the rocks to find snakes.