Default UI Menu: Architecture/Add Terrain Modifier
Ribbon UI Menu:
You can add or remove material from a terrain around a closed, 2D profile.
- Start with a terrain, and create a closed 2D shape, such as a rectangle.
- In this example, the shape is placed vertically so that part of it is below the terrain, and part of it is above.
- Activate Terrain Modifier, and select the terrain to modify. Then select the closed shape. Material is added or removed as needed to meet the shape.
- To slope the terrain around the modified shape, add an Offset value.
This is the result: