Unity3D Tips - Terrains - 6. Terrain Holes

A quick guide to how and why you'd cut holes in a standard terrain. We'll cut a hole and then build a quick cave from a collection of meshes to get things a little more 3d and let us break out of the terrain! This quick Unity terrain tutorial has you covered for making everything from a cave to tunnel in your game.

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[boneitch]

This is exactly what i was looking for. I have a scene with a cabin with several basement levels, surrounded by woods, and I was trying increasingly obscure and silly things to get the terrain to work. Cant believe i hadnt found this solution... THANK YOU 😭

[Banaaani]

I am creating a bunker in my terrain. I did not know how to deal with this problem so I asked ChatGPT. ChatGPT didn't really know a good way, just gave advice for some complicated mesh deformation systems etc. Well I am glad I checked goog quickly too, this is absolutely perfect for me. Thanks!

[twosoulfox]

Thank you so much. This is usually skipped.
All questions answered, too.
Great job.

[bioburden]

Great tip. Will be useful when creating tunnels in my scene 😁

[HuGGmaN]

would love one about creating holes with script in runtime

[lowpolyforge]

Great! I need to update my unity. Thanks Timps :)

[keisukepaws]

When I build the game, the texture is still showing but the collider isnt there, any idea what I missed?
Thank you in advanced.

[pingu]

My Terrian Holes wont render when I build. I have selected "Paint Terrian Holes" in the URP-BalancePiplelineSettings. If I enable "Draw Instanced" on my terrian, the hole work but all my ground textures dissapear.

[cubus]

Thanks this was very helpful and short :) I like it,

[ImRiso]

why when i go in terrain and assign it says: none (terrain data)?

[enmanuelortiz]

Nice! I was looking for this. So if I want to create a really big cave where you can go in and explore, I guess I need to create several rings as I move the path downwards, is that right?

[nickfai]

Hi, I was mistakenly create hole on the ground. How can I remove the hole?

[erikm]

This is extremely useful for static terrain, but if you want to create a hole in the terrain in real-time then it falls apart

[whiteshadow]

Hi, how to fix the blocky terrain deletion? Like when you delete terrain you'd usually get it round with whichever present you use but regardless if I use the circle one it still cuts a square. Do you know how to fix that or is it just a general bug or something?

[NayefMohammed-if]

I wish unity would just let us dig out holes