oh, if you create mountains there are many ways to do.
first: create a plane (nurbs or polyā¦doesnĀ“t matter) then hit ctrl+a (attribute editor) and there add a bump or displacement map like noise or marble to your matrial. with a bump value like 3 or even 5 you should get some mountainā¦
second: create a polygon plane and use the sculpt polygon tool to dodge around the surface.
third: create a poly plane. subdivide it a serveral times so youĀ“ve got some vertecies (those purple points) you can drag in a directionā¦now just push and pull your vertecies and youĀ“re doneā¦