Corner earth filled Log Reventment
Corner Unit for Horizontal Timber Fort...
Corner Unit for Vertical Timber Fort Set
Corner wall of gabion baskets
Gabion Artillery Position
Gate Unit for Horizontal Timber Fort Set
Gate Unit for Vertical Timber Fort Set
High Rough Stone Wall
Horizontal Timber Fort Set
Rough Stone wall
Small stone wall
Straight earth filled Log Reventment
Straight Section for Horizontal Timber...
Straight Section for Vertical Timber...
Straight wall of gabion baskets
Timber & Earth Artillery Position