Two bases, with two different yards. One yard holds damage boost, the other a shield boost. Splitting the two is an interactive train. In the beginning the doors will be shut. To open them, move to the "Nest" above to open, be sure that your team is first in, in order to open the next set of doors-- leading to the power weapon, (Rocket Launcher). When you reach the rear room, there is another button you can press to open the rear doors or you can walk back out the doors you originally entered. Aside from the train, (in the yards with the Spartan boosts) are different areas with different strategic advantages. This is a very team based map, offering many strategies, it's just up to you to define the best strategy.

Good luck Spartans.