Medieval Stone Wall - Procedural Material

Long story short, I scanned this medieval wall while ago but failed to build material from it. Surface is just ridiculously broken, stones overlaps to each other .. real brick wall in details looks like a big mistake. Try to make it working means manual rebuild and redesign for entire surface in Painter so I just passed on this one. Surface itself was super cool and interesting and as material would be very useful for any medieval wall asset. I am sure one day when I figure out how to fix it without spending entire day trying, I will go back to this one. In a meantime I used it as an inspiration for substance.
Here is a google link to that location:
https://www.google.co.uk/maps/@54.9693026,-1.6104983,3a,63.5y,176.5h,97.03t/data=!3m6!1e1!3m4!1srSOORNTi_GnmO8iOplEgVA!2e0!7i13312!8i6656