In this SolidWORKS tutorial video, we learn to make free surfaces, by adding splines, control points over a surface. We use freeform surface differently over two surfaces in this video, to get an understanding about using the feature.
The terrain is used in following video, where a Off road CAR climbs over it.
Do check the video: • SolidWORKS OFFROAD CAR climb on rough TERR...