ZkinandBonez said:
Crazy thought, but could Starkiller base actually be a super-weapon hidden inside an entire planet?
....And on the poster we see a Death Star type of super-weapon that looks like a snowy planet with a slit/crevice in the middle.
That was my first thought also. That super weapon seems to have an asymmetrical surface texture, including some of the scarring visible in your top picture.