| Class | Description | 
|---|---|
| AbstractTunnelLayerExporter | Abstract base class for custom tunnel or floating layer exporters. | 
| FloatingLayerExporter | |
| TunnelFloorDimension | A  Dimensionof which the terrain height follows the floor of a
 particular Custom Cave/Tunnel Layer. | 
| TunnelLayer | |
| TunnelLayer.LayerSettings | |
| TunnelLayerExporter | |
| TunnelLayerHelper | A helper class that can perform all the floor and roof height calculations for a particular TunnelLayer and
 Dimension. | 
| TunnelLayerRenderer | |
| TunnelRoofDimension | A  Dimensionof which the terrain height follows the roof of a particular Custom Cave/Tunnel Layer. | 
| Enum | Description | 
|---|---|
| TunnelLayer.EdgeShape | |
| TunnelLayer.FillMode | |
| TunnelLayer.LayerMode | |
| TunnelLayer.Mode |