In this example, the Erosion tool is being used on the front and back sides of the mountain face. On the front side, the incline is not as steep, so the surface is not eroded as quickly with the
settings being used. However, on the back side, the incline is much steeper and erodes much more quickly.
Use the following controls to Sculpt with Erosion for your Landscape heightmap:
Left Mouse Button
Applies erosion values that raises, lowers, or does both to the the heightmap.