Hi guys, I am new to the modding world and am trying to build a sunken highway. I have nam, the sunken highway walls....but what I am trying to do is get the terrain like this video http://m.youtube.com/watch?v=k6P7o4hIH6Y
when he plops down the hole diggers, the grass turns into a rocky terrain. How do I get that?
Thanks in advance and hope I am descriptive enough.