Well, I guess I will start out with a little description, since that is standard, still...I hope...well...Let's get started!
I got the map name from a spell in World of Warcraft. Quite a good one, I might add. But, I digress. I used the Katabatic terrain and filled in the holes, as well as add a few for the large underground base used in a siege map (I cannot remember the name for the life of me, but it is the same base as the one used in the map "Containment").