The fortification is part of outpost can connect other towers, servie as a bridge for different functional buildings. The defensive outer wall is made of the same material as the guard tower. Only muzzle was left on the replaceable sealed wall. It is fully applicable for both defense and storage. The empty space allow more defensive troops or large defensive weapons. It can form a complete fortification with Fortification B.

SIB03

Main Frame x23

Frame decoration x35

Connector x48

Stairs x3

Railing x17

Auxiliary support x4

Decorative sticker x3

Manual x1