Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. architectural elements
7. [architectural elements by building type]
8. fortification elements
9. outworks

Anotations

Scope note:

Part of the outworks of a fortress, built in front of the glacis, consisting of two converging faces forming a salient angle, forming an arrowhead shape.Similar to a redan, but with faces forming an acute angle.