A terrain sculpting brush for creating smooth slopes and ramps on your Unity3D terrain objects. It is great for creating: roads paths causeways valley bottoms ramps between platforms sloping meadows on hillsides ziggurats Demo Asset Store It is very easy to use. Just drag the RampBrush component to a game object. The click on a starting point, an ending point and presto you have a ramp. Brush options include brush size, opacity, softness. The brush also supports undo. Look for it in the asset store.