Underground bunker.

[Zerahan]

• [ ] Bunker door in side of cliff with elevator that leads down
• [ ] Split in half by crevasse
• [ ] Reactor room
• [ ] Residential rooms (~10 bedrooms, with kitchens, bathrooms, etc)
• [ ] Hydroponics (Several rooms dedicated to growing eatable plants of various kinds)
• [ ] Mining/manufacturing (several rooms surrounding a massive borehole for processing ores into useful materials)
• [ ] Vent network that connects everything together outside of the normal hallways