A theory about HALO 5's legendary ending

SPOILERS AHOY FOR HALO 5!








So, I was doing some digging [after a question plagued my mind] and I might have found out something.

The question was; What Halo Installation did Cortana get a hold of inside HALO 5's Legendary ending?

After viewing a screenshot [link here; i.stack.imgur.com/E8yho.png] and reading about the Seven Halos [excluding Installation 4 and 4B as both got destroyed by the Chief and Cortana] I think I have gotten what that installation is.

Installation 2; halo.wikia.com/wiki/Installati…

The wiki page put it's picture as similar to it [inside the screenshot I noticed that the installation was Ice Covered, which rules out all but Installation 2 and 6, as it appeared ice covered, but could be moon-like-except that it has WATER, which isn't on installation 2], but I didn't get any good proof that this was the installation I was looking at.

So I went to my HALO Encyclopedia to see what Installation 2's surface was; water with glaciers.

The Halo Installation at the end of HALO 5 could very well be Installation 2!  Does this mean we will be fighting on ice covered maps much like sidewinder [or avalanche of HALO 3] of the original HALO?  I hope so.