I decided to revisit OG Skyrim to get away from all the Creation Club nonsense, and wanted to continue to use mindflux's Nordic Stonewalls, which has the generous permission: "You are allowed to use the assets in this file without permission as long as you credit me."  I matched the color of the texture to vanilla Skyrim stonewalls, and I am sharing it here... Enjoy!

From the original description:

New custom stonewalls with 3d geometry.

The most common stonewalls are included, for example those seen in Riverwood.

PERFORMANCE
Each object is roughly equal to one to two trees so while there's definitely more geometry than in vanilla you probably won't see much difference in framerate.

COMPATIBILITY
For Version 1.x, I've maintained the proportions of the vanilla assets so these should work (and tile) exactly the same as vanilla ones.

Any ivy modifications using vanilla UV mapping and referencing vanilla textures will work. Others will require patching.

CUSTOM TEXTURES
It's possible to replace the textures with your own if you want to match the stonewalls to some other asset. A typical tiling texture will work perfectly fine.

The textures are as follows:

Boulders
textures/mx/stonewall01_c.dds
textures/mx/stonewall01_n.dds

Wall
textures/mx/stonewall02_c.dds
textures/mx/stonewall02_n.dds

Have fun!