# Smudge the terrain

> Move elevated parts of the terrain along the path of the brush stroke.

> **Note:**
>
> This tool is only available in the [Terrain Tools package](https://docs.unity3d.com/Packages/com.unity.terrain-tools@latest/).

To move elevated parts of the terrain along the path of the brush stroke, use the Smudge tool.

> **Tip:**
>
> The Smudge and Pinch tools can appear similar When the [Pinch tool's](/engine/6000.3/manual/creating-environments/script-terrain/terrain-height/terrain-transform/pinch.md) **Pinch Amount** is negative, it pushes the terrain away. This is indeed similar to the Smudge tool, but the Smudge tool doesn't always create a smooth surface.

## Access the tool

To smudge the terrain, in the Terrain tile’s Editor window, select the **Paint Terrain** tool > tool dropdown > **Transform** > **Smudge**.

## Tool options

The Smudge tool is brush-based. To learn about working with brushes, refer to [Brushes](/engine/6000.3/manual/creating-environments/script-terrain/class-brush.md).

## Smudge controls

Use the **Targets** selection to decide whether the Smudge tool impacts only the material, only the height, or both.

> **Tip:**
>
> The change in the materials is only visible if there are at least two materials in the smudge area.

## Additional resources

* [Pinch the terrain](/engine/6000.3/manual/creating-environments/script-terrain/terrain-height/terrain-transform/pinch.md)
* [Twist the terrain](/engine/6000.3/manual/creating-environments/script-terrain/terrain-height/terrain-transform/twist.md)