The terrain is just grassy, for the most part. A few sparse trees around, the dirt getting kicked is from Fury's crater that he left behind by landing. Also dirt is everywhere, kicking dirt from the ground is possible even with grass everywhere.

I mentioned the grass in the first post, and rocky planet as in mountainous. Poor wording on my part, I didn't mean it in the planet is dry and rocky. 

Edit: I asked my roommates what they thought of first when I said Rocky Planet, and I'm the asshole here. I visualized a mountainous planet, but everyone else visualized a dry crag. 

Entirely my bad, I'm the asshole here.