I came up with idea of creating cave in Unity 3D which may be quite challenging as there is none built in tool that would enable me to create a cave easily, therefore one option is to create it as an external file in 3D modelling programme like 3DS Max or Blender, or to try using two terrains and model them in a way to form a cave.
For now it seems a bit easier to create it as an external file, and I will probably use Blender to do so, as i have used it for quite a while in the past projects in my High School.
I may need this to create a project for final assignment for one of my modules, but it can be a good practice for the work we need to have done this week in Unity, as I have done a bit of terrains last week so I was looking for something more challenging than creating a simple terrain, that anybody can do...