What it does not touch in Stony Cliffs Are Cool

Terrain height and terrain shape are completely unchanged. Hills sit where they sat, at the height they were, with the same silhouette - only the material showing on the cut face is different.

It also adds nothing: no blocks, no items, no mobs, no structures, no recipes and no biomes. Nothing about how you play changes, and removing it leaves behind a world whose landscape is still perfectly ordinary.