What would be the best way to assimilate a large combined mesh into something i can use for world generation

i have a large procedurally generated mesh consisting of a lot of small meshes (added with Mesh.CombineMeshes) and although that works well and good, what would be the best way to convert that to a mesh or polygon of some kind that would be workable for level geometry.

(example pictures of the mesh)

sorry if this is the stupidest question known to man but any help at all is greatly appreciated!

What do you mean by that?

You already have turned it into a single mesh from what I understand. There’s little else you could do without providing specifications what the end result should be. Do you wish to extrude these planes into 3D geometry (tunnels) perhaps?

Do note that a single mesh means the entirety of a combined mesh is rendered any time its bounds are within the camera frustum which could become wasteful as more geometry is being added.

To make it interactive you just need to add a mesh collider component to it.

AddComponent<MeshCollider>();

Sorry about the confusion, i am trying to extrude the mesh into 3d tunnel geometry. The entire this is currently one big mesh object constructed using smaller meshes combined into it.

Thanks for any help you can give