Mesh and material custom mesh wall separators in the form of cliffs you can use for your sim surround, separating areas in your land, and more.
This is a builder's kit consisting of 8 pieces, 4 variants of straight wall, a curve in, a curve out, a 90 in, and a 90 out.
Land impact is roughly:
2 @ 2x4x6.6
17 @ 6.5x24x21.6
It's recommended to keep them smaller and use multiple pieces together so the textures look better.