OptionalexaggerationVertical scaling of the surface: 1 is true elevation, higher values emphasise the relief.
Kept while visible is off, so turning it back on restores it.
hillshade.exaggeration is a different thing: how strongly the slopes are shaded, raising nothing.
OptionalvisibleRaises the map surface in 3D, or flattens it.
The 3D surface of the TerrainModule, raised to the elevation data. Shows best with a pitched camera.