hey guys, i was wondering how you would make a small hole in the ground, almost like a trench, kind of like how in the arena lumberyard, on the side there is a branch going over a trench with health on the branch, you know the one im talking about?? how would you make that just like a normal ground with a ditch in the middle. with displacements maybe?? if so how to go about doing displacements? thanks guys!