The mass amount of colesium walls makes it bland, and conisdering the title and looks, I'm guessing you were going for a sewage plant type feel. The map could use an actual building, and the killball for a random lava pit was a bit of a cliche. What I'm trying to say is, stick to one theme. The map itself looks like it would be decent for a game of race or rally.
I somehow agree with SPL4TTERMAN, but not entirely. Using mainly one piece gives the map a bland feel, but since this supports Rocket Race, you probably needed to use a large enviornment, therefore large pieces. On a side note, I really love the pipeline that goes around the giant rock sticking out of the water (I'm trying my best to be specific lol). To sum things up, this seems to be a very good map. DL-ing now for full effect!
> As I said at XForgery this map is cool. But I don't agree with the above comments. Why would you want a building on a rocket hog track?