From Die2Nite Wiki
|Multiple mounds of earth, reinforced with wooden beams. These are a pre-requisite for constructing powerful defence turrets...|
|Action Points cost||50|
|Resource cost||×7 ×1×1|
It looks awfully basic, and that's because it is. However, now that we have a small hill as the base, we can probably mount some crazy cannon to blow up those zombies outside without blowing up the Town Gates first.