Terrain Edge Wall

Sometimes during environment or level design, Unity Terrains need proper geometry along their outer edges instead of open sides or visible gaps. Terrain Edge Wall is a lightweight tool that generates procedural side wall meshes directly from the terrain heightmap.

The generated walls follow the terrain surface while extending down to an adjustable base position. Individual edges can be enabled or disabled, and edges shared with neighboring terrains can be excluded automatically. Adjustable sampling makes it possible to balance mesh detail and vertex count.

Terrain Edge Wall does not modify the original terrain data. It supports automatic and manual updates, optional collision geometry, bottom-plane generation, multi-object editing, and mesh baking for production-ready scenes.

The perimeter-based UV mapping keeps texture proportions consistent on rectangular terrains, making the tool suitable for cliffs, map borders, floating islands, cutaway environments, and stylized terrain chunks.

Features

• Procedural terrain side wall mesh generation
• Adjustable wall height
• Adjustable heightmap sampling density
• Custom material support
• Non-square terrain support
• Multi terrain support
• Automatic mesh updates
• Optional bottom plane with a separate material
• Optional Mesh Collider generation
• Mesh baking
• Mesh vertex and triangle statistics
• Non-destructive workflow
• Multi-object editing
• Undo / Redo support
• Lightweight

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