This is a big attempt to creat a gravel pit under the roof. And I think it succeeded.
My first impressions are:
BLU spawn: on screens it's hard to see, but, like in Gravel pit, it's almost impossible to spawn camp. You have a large nice set up area. I like that toward Point B you kind of drop down. (more Gravel Pit references). A positive thing, that you can clim back to the base.
Point A: a very wide open area. A very generous for this type of map. And a cool small area behind the capture point. Is just great for spy and sniper.
Point B: like that it's possible to flank on several levels. And point capture house is big.
Point C: this a strange point, I would say. Not sure how the small platforms can help to cap point, but sure. Let's give it a try.
A-B connector: this is a maze! But, you can do a funny jumps from iron boxes with melting metal. And huge pipes are very organic there.
In general: this is a map, which is bigger on the inside. I didn't expect the distances to be that long (as like on Gravel Pit), and the volume of some rooms positively reminds me of Foundry huge halls. No light issues (though, it might be too bright for rooms, but I will take that as DX lag).