It's got the Space Marines vehicles outside, the inside structure of the colony, and a xenomorph nest built under it...
![Image](https://ic.pics.livejournal.com/evilgrins/3189901/2319282/2319282_original.png)
...with pathing for xenomorphs to spawn in down there and make their way up into the colony to patrol for players they can attack.
From any gametype: what is your favorite map that's based off a movie, television series, comicbook, and/or novel?