SubD Terrain Model - Rhino 7

This video tutorial goes through the steps to create a terrain model through the use of SubD tools in Rhino 7. The key steps in this video can be found below:

00:00 - Introduction
00:16 - Creating a SubD plane
00:37 - Subdividing the plane into a larger number of faces/ vertices
01:17 - Turning on 'Control Points' to edit the plane via its vertices
01:46 - Using 'Soft Transform' to transform multiple vertices within a radius
03:28 - Adjusting the 'Radius' of the 'Soft Transform' to add detail
05:00 - Creating contour lines from the SubD surface
06:55 - Using 'Patch' command create a surface from the contours
07:50 - Tidying the surface into a square block using 'Trim'
08:36 - Extruding the terrain surface into a 3d model