Blueprint/Code driven landscape visibility?

[Swornh]

This guy does it in this video: https://youtu.be/1U-5zxJCIN4?si=gCg7ARfqOEWSOw09&t=157
I’ve been trying to recreate this, with no luck yet

Cut landscape mesh with blueprint (Like a dynamic boolean operation)

Hi, so I basically have the exame same setup as in this video “https://www.youtube.com/watch?v=9hwkFJ_vxdg”, where you have a building with some kind of underground passage, or a open world cave entrance. But from what I saw, people “cut” or hide the mesh visibility at the editor. I was wondering if it wouldn’t be possible to add a collision box or any other object at the blueprint, like the image below, and then just detect where it intersects with the landscape and cut it out, like the we ca…