I haven't finished it all yet. I still have another 6 pieces painted but that need detailing, another 4 built but not painted and then quite a bit more yet to build, including all the endcaps with roofs, which I'm going to have to sit down and figure out how to build soon.
Anyway this is what I have done so far.
It almost fills the table.
Probably won't be doing too much Space Wolves vs. Thousand Sons on it as it isn't too closely themed for that in 30K, but probably the initial game will be using those guys as they are what I'm working on currently. It will probably feature more in some Istvaan III gaming tunnels beneath the surface that World Eaters are fighting each other in.
It will work great for Infinity too. I'll just have to populate it with scatter terrain.
If I had Word Bearers and Ultramarines, or Ultramarines at all, it would be perfect for doing some Calth stuff, working in the odd rocky section where the natural tunnels were left with maybe just a railing and lights in that part.
You can see more pictures at the link below:http://imgur.com/a/Ms7Di