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# General settings
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The **General** settings include basic information you need to create a new Terrain, such as Terrain width, length, height, and number of tiles.
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| **Property** | **Description** |
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| ------------------ | ------------------------------------------------------------ |
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| **Terrain Width** | The total width of the Terrain (in meters along the X axis). |
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| **Terrain Length** | The total length of the Terrain (in meters along the Z axis). |
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| **Terrain Height** | The height of the Terrain (in meters along the Y axis). |
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| **Start Position** | The start position of the first tile (X, Y, Z). |
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| **Tiles X Axis** | The number of tiles along the X axis. |
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| **Tiles Z Axis** | The number of tiles along the Z axis. |
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## Group Settings
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**Group Settings** let you apply the same settings to new Terrain tiles in a group. Often, a group of Terrain tiles share the same Grouping ID, heightmap resolution, and Material.
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| **Property** | **Description** |
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| -------------------------- | ------------------------------------------------------------ |
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| **Grouping ID** | The grouping ID for the new Terrain tiles. |
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| **Pixel Error** | The accuracy of the mapping between Terrain maps (such as height maps and textures) and generated Terrain. Higher values indicate lower accuracy, but with lower rendering overhead. |
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| **Base Map Distance** | The maximum distance at which Unity displays Terrain textures at full resolution. Beyond this distance, the system uses a lower resolution composite image for efficiency. |
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| **Draw Instanced** | Check this box to enable instanced rendering, where Unity uses GPU instancing to calculate Terrain data on the GPU and efficiently render the Terrain mesh. |
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| **Material Override** | A custom Material to render the Terrain with. Specify **None** to use the default material. |
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| **Tile Height Resolution** | The pixel resolution of the Terrain’s heightmap, also known as Heightmap Resolution. |
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