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. [defensive walls and defensive wall components]
10. defensive walls

Anotations

Scope note:

Celtic late Iron Age defensive walls, generally constructed of thick lines of stones, held together and reinforced by a core of timber frames fastened with iron nails, and covered with a sloping earth rampart; sometimes faced with cut stone and topped by a parapet.