- Reach level 19, open the Technology menu and unlock Stone Structure Set for 3 Technology points.
- Collect what you need:
- Open the Build menu (B on PC), go to the Foundations tab, then Stone, and pick Stone Pyramid Roof. Place it inside your base.
Stone Pyramid Roof
A pyramidal roof built on top of walls to keep out the rain and wind.
Made from stone, it is reasonably sturdy.